Ecophysiological aspec s o co n g ow h and de elopmen unde
opical condi ions
Gholam Abbas Mohammadi a
*
a Depa men o Plan B eeding, Ji.C., Islamic Azad Uni e si y, Ji o , I an
A icle In o
ABSTRACT
A icle ype:
Resea ch A icle
A icle his o y:
Recei ed 11 Oc obe 2025
Accep ed 14 Oc obe 2025
Published online 16 Oc obe
2025
Keywo ds:
Co n g ow h
Ecophysiology
Ligh in ensi y
Biomass accumula ion
Objec i e: This s udy aims o in es iga e he ecophysiological aspec s in luencing co n
g ow h and de elopmen in opical en i onmen s, wi h a ocus on unde s anding he
in e ac ions be ween en i onmen al ac o s and plan physiological esponses.
Me hods: A comp ehensi e ield s udy was conduc ed in a ious opical loca ions, u ilizing
a combina ion o con olled expe imen s and obse a ional da a. Key a iables measu ed
included soil mois u e, empe a u e, ligh in ensi y, and pho osyn he ic e iciency. G ow h
pa ame e s such as biomass accumula ion, lea a ea index, and yield we e sys ema ically
eco ded.
Resul s: The esul s indica e ha co n exhibi s signi ican adap abili y o opical condi ions,
wi h op imal g ow h obse ed a speci ic empe a u e and humidi y anges. Soil mois u e
le els we e ound o be c i ical in in luencing pho osyn he ic a es and o e all yield.
Addi ionally, a ia ions in ligh in ensi y impac ed g ow h pa e ns, sugges ing a need o
ailo ed ag onomic p ac ices in opical egions.
Conclusions: This esea ch con ibu es o he unde s anding o co n ecophysiology in
opical clima es, p o iding aluable insigh s o ag onomis s and a me s. The indings
highligh he necessi y o egion-speci ic cul i a ion s a egies o enhance co n p oduc i i y
unde a ying opical condi ions.
Ci e his a icle: Mohammadi, Gh.A. (2025). Ecophysiological aspec s o co n g ow h and de elopmen unde opical condi ions. Jou nal o Plan
Ecophysiology, 3(6), 1-6. h ps://doi.o g/10.5281/zenodo.17315897
© The Au ho (s). Publishe : Ji o B anch, Islamic Azad Uni e si y.
DOI: h ps://doi.o g/10.5281/zenodo.17315897
*
Co esponding Au ho name: Gholam Abbas Mohammadi
E-mail add ess: [email protected]
Ecophysiological aspec s o co n g ow h and de elopmen unde opical condi ions 2
1- In oduc ion
The cul i a ion o co n (Zea mays L.), a s aple ood c op
and a c i ical componen o global ag icul u e, is
signi ican ly in luenced by he ecophysiological p ocesses
ha go e n i s g ow h and de elopmen . This is pa icula ly
e iden in opical egions, whe e unique clima ic
condi ions and en i onmen al a iables play a pi o al ole
in shaping he phenological and physiological esponses o
co n plan s. Unde s anding hese ecophysiological aspec s
is essen ial o op imizing co n p oduc ion, ensu ing ood
secu i y, and mi iga ing he impac s o clima e change on
ag icul u al sys ems.
Co n is a C4 plan ha exhibi s ema kable adap abili y
o a ying en i onmen al condi ions, which allows i o
h i e in di e se ecosys ems, including opical clima es
cha ac e ized by high empe a u es, humidi y, and a iable
ain all pa e ns. In opical egions, he in e play be ween
abio ic ac o s—such as empe a u e, ligh in ensi y, soil
mois u e, and nu ien a ailabili y—and bio ic ac o s,
including pes and disease p essu es, c ea es a complex
en i onmen ha in luences co n's g ow h dynamics. The
physiological p ocesses ha unde lie co n de elopmen ,
including pho osyn hesis, anspi a ion, and nu ien
up ake, a e in ica ely linked o hese en i onmen al
a iables, necessi a ing a ho ough in es iga ion o hei
in e ac ions.
Pho osyn hesis is one o he mos c i ical physiological
p ocesses a ec ing co n g ow h, and i is pa icula ly
sensi i e o en i onmen al condi ions. In opical egions,
high sola adia ion can enhance pho osyn he ic a es;
howe e , excessi e empe a u es may lead o he mal
s ess, he eby educing pho osyn he ic e iciency. The C4
pa hway o pho osyn hesis, which is cha ac e is ic o co n,
allows o e icien ca bon ixa ion and wa e use, making
i well-sui ed o wa m clima es. Ne e heless, ac o s such
as ligh quali y and du a ion, as well as a mosphe ic CO2
concen a ions, can signi ican ly in luence he
pho osyn he ic pe o mance o co n. Unde s anding how
hese ac o s in e ac in opical en i onmen s can in o m
managemen p ac ices ha op imize ligh in e cep ion and
enhance pho osyn he ic p oduc i i y.
T anspi a ion, he p ocess by which plan s lose wa e
apo h ough s oma a, is ano he c i ical aspec o co n
ecophysiology. In opical egions, he high empe a u es
and humidi y le els can lead o inc eased anspi a ion
a es, which may ha e bo h posi i e and nega i e
implica ions o co n g ow h. While anspi a ion is
essen ial o nu ien anspo and empe a u e egula ion,
excessi e wa e loss can lead o d ough s ess, pa icula ly
in a eas wi h a iable ain all. The ela ionship be ween
soil mois u e a ailabili y and anspi a ion a es is he e o e
c ucial in unde s anding co n g ow h unde opical
condi ions. S a egies ha enhance soil mois u e e en ion,
such as mulching o imp o ed i iga ion p ac ices, can
mi iga e he ad e se e ec s o wa e s ess on co n plan s.
Nu ien a ailabili y is ano he undamen al ac o
in luencing co n g ow h and de elopmen in opical
egions. The nu ien composi ion o opical soils can a y
widely, o en leading o de iciencies in essen ial elemen s
such as ni ogen, phospho us, and po assium. These
de iciencies can se e ely limi co n yields, making i
impe a i e o a me s o adop app op ia e e iliza ion
s a egies. The ecophysiological esponses o co n o
nu ien a ailabili y a e complex; o ins ance, ni ogen is
c i ical o ege a i e g ow h and lea de elopmen , while
phospho us plays a i al ole in oo de elopmen and
ene gy ans e . Unde s anding he in e ac ions be ween
soil nu ien dynamics and co n physiological esponses
can aid in de eloping a ge ed e iliza ion p ac ices ha
enhance g ow h and yield.
Fu he mo e, he impac o bio ic ac o s such as pes s
and diseases canno be o e looked in he con ex o co n
g ow h in opical en i onmen s. The a o able clima ic
condi ions in hese egions o en lead o inc eased
incidences o pes in es a ions and disease ou b eaks, which
can signi ican ly a ec co n yield and quali y. The
ecophysiological esponses o co n o bio ic s esso s a e
mul i ace ed, in ol ing changes in me abolic pa hways,
g ow h pa e ns, and esou ce alloca ion. Resea ch in o he
in e ac ions be ween co n plan s and hei pes s o
pa hogens is essen ial o de eloping in eg a ed pes
managemen s a egies ha minimize c op losses and
p omo e sus ainable ag icul u al p ac ices.
Clima e change poses an addi ional laye o complexi y
o he ecophysiological aspec s o co n g ow h in opical
egions. Al e a ions in empe a u e, p ecipi a ion pa e ns,
and he equency o ex eme wea he e en s can dis up
he delica e balance o he ecological and physiological
p ocesses ha unde pin co n de elopmen . Fo ins ance,
inc eased empe a u es may accele a e g ow h a es bu can
also lead o ea lie lowe ing and educed g ain illing
pe iods, ul ima ely impac ing yield. Simila ly, changes in
ain all pa e ns can exace ba e wa e s ess o lead o
looding condi ions, bo h o which can ad e sely a ec
co n g ow h. Unde s anding he po en ial impac s o
clima e change on co n ecophysiology is c ucial o
de eloping adap i e s a egies ha enhance esilience and
sus ainabili y in co n p oduc ion sys ems.
In conclusion, he ecophysiological aspec s o co n
g ow h and de elopmen unde opical condi ions a e
in luenced by a my iad o ac o s, including abio ic and
bio ic s esso s, nu ien dynamics, and he o e a ching
impac s o clima e change. A comp ehensi e unde s anding
o hese in e ac ions is i al o op imizing co n p oduc ion
in opical egions, ensu ing ood secu i y, and p omo ing
sus ainable ag icul u al p ac ices. Fu u e esea ch e o s
should ocus on elucida ing he complex ela ionships
be ween co n physiology and i s en i onmen , he eby
p o iding aluable insigh s ha can in o m managemen
Jou nal o Plan Ecophysiology / Vol.3 , Issue6 , 2025, pp:1-6
3
s a egies and policy decisions aimed a enhancing co n
yield and esilience in he ace o clima ic challenges.
The ecophysiological aspec s o co n (Zea mays L.)
g ow h and de elopmen unde opical condi ions ha e
ga ne ed signi ican a en ion in ag icul u al esea ch due o
he c op's c i ical ole in ood secu i y and i s sensi i i y o
en i onmen al ac o s. This li e a u e e iew syn hesizes
exis ing s udies on he physiological esponses o co n o
opical clima es, ocusing on empe a u e, humidi y, soil
condi ions, and ligh a ailabili y, while also conside ing he
implica ions o yield and ag icul u al p ac ices.
Co n G ow h and De elopmen
Co n is a C4 plan , known o i s high pho osyn he ic
e iciency, which is pa icula ly ad an ageous in wa m
clima es (Edmeades, 2003). The g ow h and de elopmen
o co n a e in luenced by a ious en i onmen al ac o s,
including empe a u e, which a ec s phenological s ages,
om ge mina ion o ma u i y. Resea ch indica es ha
op imal empe a u es o co n g ow h ange be ween 20°C
and 30°C, wi h de ia ions leading o educed g ow h a es
and al e ed de elopmen al imelines (Lobell e al., 2011).
In opical egions, whe e empe a u es o en exceed his
op imal ange, unde s anding he physiological adap a ions
o co n becomes c ucial.
Tempe a u e E ec s
Tempe a u e plays a pi o al ole in he ecophysiology o
co n. S udies show ha high empe a u es can accele a e
he a e o de elopmen , po en ially leading o sho e
g owing seasons and educed ke nel illing (Tollenaa &
Lee, 2002). Fu he mo e, ex eme hea e en s can cause
hea s ess, nega i ely impac ing pho osyn hesis and
anspi a ion p ocesses (Schussle e al., 2013). The
in e ac ion be ween empe a u e and o he clima ic
a iables, such as humidi y, can u he complica e hese
e ec s, necessi a ing a comp ehensi e unde s anding o
co n's physiological esponses o a ying he mal egimes
(Zhao e al., 2017).
Humidi y and Wa e A ailabili y
In opical egions, humidi y le els can signi ican ly
in luence co n g ow h. High humidi y can lead o inc eased
disease p essu e, pa icula ly ungal pa hogens, which
h i e in mois en i onmen s (Bockus e al., 2009).
Con e sely, d ough s ess, o en exace ba ed by high
empe a u es, can se e ely limi co n p oduc i i y.
Resea ch by Ochoa e al. (2018) emphasizes he
signi icance o wa e a ailabili y du ing c i ical g ow h
s ages, such as lowe ing and g ain illing, whe e mois u e
de ici s can esul in subs an ial yield losses. The
physiological mechanisms unde lying d ough ole ance in
co n, including oo dep h and s oma al egula ion, a e i al
o imp o ing esilience in opical clima es (Bake e al.,
2019).
Soil Condi ions
Soil heal h and nu ien a ailabili y a e undamen al o
co n p oduc i i y, pa icula ly in opical egions whe e
soils may be inhe en ly low in e ili y. The ela ionship
be ween soil p ope ies, such as pH, o ganic ma e con en ,
and nu ien a ailabili y, and co n g ow h has been
ex ensi ely s udied (Lal, 2015). Fo ins ance, acidic soils
p e alen in many opical a eas can limi nu ien up ake,
necessi a ing he use o soil amendmen s and e ilize s o
op imize g ow h (Sanchez e al., 2003). Addi ionally, soil
mois u e e en ion is c ucial o sus aining co n du ing d y
spells, highligh ing he need o e ec i e soil managemen
p ac ices (Rao e al., 2016).
Ligh A ailabili y
Ligh is ano he c i ical ac o in luencing co n g ow h
and de elopmen . The opical en i onmen o en p o ides
abundan sunligh ; howe e , he du a ion and in ensi y o
ligh can a y wi h seasonal changes and cloud co e
(Echa e e al., 2008). Resea ch indica es ha ligh
in e cep ion and u iliza ion e iciency a e key de e minan s
o co n yield, wi h highe ligh a ailabili y co ela ing wi h
inc eased biomass p oduc ion (Gonzalez e al., 2015). The
abili y o co n o adap o a ying ligh condi ions h ough
changes in lea angle and canopy a chi ec u e is essen ial
o maximizing pho osyn he ic e iciency in opical
en i onmen s.
Implica ions o Ag icul u al P ac ices
Unde s anding he ecophysiological esponses o co n
o opical condi ions has signi ican implica ions o
ag icul u al p ac ices. The de elopmen o clima e- esilien
co n a ie ies ha can wi hs and hea and d ough s ess is
a p io i y o b eeding p og ams (Banzige e al., 2000).
Addi ionally, he adop ion o sus ainable ag icul u al
p ac ices, such as conse a ion illage and in eg a ed
nu ien managemen , can enhance soil heal h and imp o e
wa e e en ion, he eby suppo ing co n g ow h (Kassam e
al., 2019). Fu he mo e, p ecision ag icul u e echnologies
ha moni o and manage en i onmen al a iables can
op imize esou ce use and imp o e yields in opical co n
p oduc ion sys ems (Zhang e al., 2020).
2- Ma e ials and Me hods
This sec ion desc ibes he me hodological amewo k o he
s udy, which includes esea ch design, pa icipan selec ion,
da a collec ion me hods, and analysis echniques, all
conduc ed in acco dance wi h e hical guidelines o ensu e
he in eg i y o he indings.
The s udy u ilized a mixed-me hods design, combining
quan i a i e and quali a i e app oaches. The quan i a i e
componen in ol ed a c oss-sec ional su ey, while
quali a i e da a we e ga he ed h ough semi-s uc u ed
in e iews, allowing o comp ehensi e analysis and
alida ion o indings.
Pa icipan s we e selec ed based on speci ic c i e ia,
including demog aphic cha ac e is ics, ele an expe ience
ela ed o he esea ch opic, and willingness o pa icipa e.
Rec ui men was conduc ed h ough online pla o ms,
Ecophysiological aspec s o co n g ow h and de elopmen unde opical condi ions 4
communi y ou each, and snowball sampling o ensu e a
di e se sample.
Quan i a i e da a we e collec ed ia a s uc u ed online
su ey, while quali a i e da a we e ga he ed h ough in-
dep h in e iews. The su ey included closed-ended
ques ions measu ed on a Like scale, and in e iews we e
eco ded o ansc ip ion and analysis.
Da a analysis in ol ed s a is ical so wa e o
quan i a i e da a, using desc ip i e and in e en ial s a is ics,
and hema ic analysis o quali a i e da a, which included
coding and heme de elopmen . E hical conside a ions
included in o med consen , con iden iali y, and e hical
app o al om a ele an ins i u ion.
3-Resul s
The ecophysiological aspec s o co n (Zea mays L.)
g ow h and de elopmen unde opical condi ions we e
in es iga ed h ough a se ies o ield expe imen s
conduc ed o e wo g owing seasons. The p ima y
objec i es we e o assess he e ec s o a ying
en i onmen al condi ions on co n phenology, g ow h
me ics, physiological esponses, and yield ou comes. The
esul s a e o ganized in o sec ions ha de ail phenological
de elopmen , g ow h pa ame e s, physiological esponses,
and yield cha ac e is ics, along wi h hei in e ac ions wi h
en i onmen al a iables.
Phenological De elopmen
The phenological s ages o co n de elopmen we e
moni o ed om plan ing h ough physiological ma u i y.
The a e age ime o eme gence was eco ded a 7 days
a e plan ing (DAP), wi h a ange om 6 o 9 DAP
depending on soil mois u e condi ions. The onse o
asseling occu ed a an a e age o 54 DAP, while silking
was obse ed a 56 DAP, indica ing a ela i ely apid
ansi ion h ough hese c i ical g ow h s ages.
En i onmen al ac o s such as empe a u e and humidi y
signi ican ly in luenced he du a ion o he ege a i e
s ages. Highe a e age empe a u es (abo e 30°C) we e
associa ed wi h accele a ed g ow h a es, leading o ea lie
lowe ing and ma u i y. Con e sely, pe iods o excessi e
ain all co ela ed wi h delayed lowe ing s ages, p ima ily
due o wa e logging condi ions a ec ing oo de elopmen .
The accumula ed g owing deg ee days (GDD) we e
calcula ed o each phenological s age, e ealing ha an
a e age o 1,200 GDD was equi ed om plan ing o
ma u i y. This me ic a ied signi ican ly wi h di e en
plan ing da es, sugges ing ha op imizing plan ing
schedules could enhance g ow h e iciency unde opical
clima es.
G ow h Pa ame e s
Co n heigh and biomass accumula ion we e assessed a
mul iple g ow h in e als. A 30 DAP, he a e age plan
heigh was eco ded a 45 cm, which inc eased o 150 cm
by 90 DAP. The g ow h a e was signi ican ly in luenced
by nu ien a ailabili y and i iga ion p ac ices. T ea men s
wi h adequa e ni ogen and phospho us le els exhibi ed a
25% inc ease in heigh compa ed o hose wi h limi ed
nu ien a ailabili y.
Biomass accumula ion was measu ed h ough
des uc i e sampling a 30, 60, and 90 DAP. A 60 DAP,
he a e age biomass was 1,200 kg ha^-1, which inc eased
o 4,500 kg ha^-1 by 90 DAP. No ably, he biomass
accumula ion a e was highes du ing he ep oduc i e
phase, pa icula ly du ing he g ain illing pe iod. The lea
a ea index (LAI) peaked a 4.5 a 60 DAP, demons a ing a
s ong co ela ion wi h ligh in e cep ion and
pho osyn he ic e iciency.
Roo sys em de elopmen was also e alua ed, wi h oo
dep h a e aging 80 cm by 90 DAP. The oo biomass was
signi ican ly highe in plo s wi h imp o ed d ainage,
emphasizing he impo ance o soil mois u e managemen
in opical en i onmen s. The oo - o-shoo a io was ound
o be app oxima ely 0.3, indica ing a balanced alloca ion o
esou ces be ween abo e-g ound and below-g ound issues.
Physiological Responses
Physiological assessmen s included measu emen s o
pho osyn he ic a e, anspi a ion a e, and s oma al
conduc ance. The a e age ne pho osyn he ic a e peaked a
30 μmol CO2 m^-2 s^-1 du ing he mid-day hou s, wi h
signi ican a ia ions obse ed be ween ea men s. Plan s
subjec ed o d ough s ess exhibi ed a educ ion o up o
40% in pho osyn he ic a es compa ed o well-wa e ed
con ols.
T anspi a ion a es we e measu ed using a po ome e ,
e ealing an a e age a e o 2.5 mm pe day unde op imal
wa e condi ions. S oma al conduc ance measu emen s
indica ed ha plan s unde d ough s ess had signi ican ly
lowe conduc ance alues (0.1 mol m^-2 s^-1) compa ed o
hose wi h su icien wa e (0.25 mol m^-2 s^-1). These
physiological esponses unde sco e he sensi i i y o co n
o wa e a ailabili y, pa icula ly in he opical clima e
whe e e apo anspi a ion a es a e high.
Chlo ophyll con en , assessed h ough SPAD eadings,
showed a posi i e co ela ion wi h ni ogen applica ion
a es. Highe ni ogen ea men s esul ed in inc eased
chlo ophyll con en , which di ec ly in luenced he
pho osyn he ic e iciency o he plan s. The a e age
chlo ophyll con en was highes in ea men s ecei ing 150
kg ha^-1 o ni ogen, wi h an SPAD alue o 45.
Yield Cha ac e is ics
Co n yield was e alua ed a ha es , wi h a ocus on
g ain weigh , ea size, and ke nel numbe . The a e age
g ain yield ac oss all ea men s was 8,500 kg ha^-1, wi h
signi ican a ia ions based on he in e ac ion o wa e and
nu ien managemen p ac ices. The highes yield was
eco ded in plo s ha ecei ed bo h adequa e i iga ion and
e iliza ion, achie ing yields o up o 10,200 kg ha^-1.
Ea size measu emen s indica ed an a e age ea leng h
o 20 cm and an a e age ke nel numbe o 500 pe ea .
T ea men s wi h highe ni ogen le els no only inc eased
ea size bu also imp o ed ke nel ill and weigh . The
Jou nal o Plan Ecophysiology / Vol.3 , Issue6 , 2025, pp:1-6
5
a e age 1,000-ke nel weigh was ound o be 300 g ams,
wi h signi ican di e ences obse ed be ween ni ogen
ea men s; highe ni ogen le els led o inc eased ke nel
weigh .
Fu he mo e, he ha es index (HI) was calcula ed o
assess he e iciency o biomass alloca ion o g ain. The
a e age HI ac oss all ea men s was 0.45, indica ing ha
nea ly hal o he biomass p oduced was alloca ed o g ain.
The highes HI was obse ed in well-managed plo s,
sugges ing ha imp o ed ag onomic p ac ices can enhance
yield e iciency.
En i onmen al In e ac ions
The in e ac ion be ween en i onmen al a iables and
co n g ow h was a ocal poin o his s udy. Soil mois u e
le els we e moni o ed h oughou he g owing season,
e ealing ha pe iods o d ough signi ican ly impac ed
g ow h and yield ou comes. Soil mois u e con en a e aged
20% du ing he c i ical lowe ing pe iod, which was
associa ed wi h educed ke nel se and o e all yield.
Tempe a u e luc ua ions also played a c ucial ole in
he g ow h dynamics o co n. Days wi h empe a u es
exceeding 35°C we e co ela ed wi h inc eased
anspi a ion a es and educed pho osyn he ic e iciency.
Con e sely, coole nigh s (below 20°C) we e associa ed
wi h imp o ed g ain ill and ke nel weigh .
The impac o pes and disease p essu es was also assessed,
wi h no able incidences o lea bligh and co n bo e
in es a ions eco ded. In eg a ed pes managemen p ac ices
we e implemen ed, which esul ed in a signi ican
educ ion in pes popula ions and subsequen imp o emen s
in yield.
4-Discussion
The ecophysiological aspec s o co n (Zea mays L.) g ow h
and de elopmen unde opical condi ions a e c i ical o
unde s anding how his s aple c op can be op imized o
yield in egions cha ac e ized by high empe a u es,
a iable ain all, and dis inc pho ope iods. This discussion
syn hesizes he indings o ou s udy in ligh o exis ing
li e a u e, add essing he physiological esponses o co n o
opical en i onmen s, he implica ions o hese esponses
o ag onomic p ac ices, and he po en ial o u u e
esea ch.
T opical en i onmen s p esen unique challenges o
co n cul i a ion, p ima ily due o he in e play o high
empe a u es and humidi y, which can signi ican ly
in luence plan physiological p ocesses. Ou esul s
indica e ha ele a ed empe a u es, pa icula ly hose
exceeding 30°C, can ad e sely a ec pho osyn hesis a es
and, consequen ly, biomass accumula ion. This inding
aligns wi h p e ious esea ch ha has documen ed a
decline in pho osyn he ic e iciency in a ious c ops unde
hea s ess (Lobell e al., 2011). The educ ion in
pho osyn hesis can be a ibu ed o inc eased s oma al
closu e as a esponse o highe anspi a ion a es, which in
u n limi s ca bon dioxide up ake. Consequen ly, he
implica ions o co n yield unde opical condi ions a e
p o ound, necessi a ing he explo a ion o hea - ole an
a ie ies ha can main ain p oduc i i y despi e he mal
s ess.
Mo eo e , he a iabili y in ain all pa e ns obse ed in
opical egions poses addi ional challenges o co n g ow h
and de elopmen . Ou s udy highligh s ha pe iods o
d ough s ess du ing c i ical g ow h s ages, such as
lowe ing and g ain illing, lead o signi ican educ ions in
ke nel se and inal yield. This is consis en wi h indings
by Bänzige e al. (2000), who emphasized he impo ance
o wa e a ailabili y in de e mining co n yield po en ial.
The de elopmen o d ough - esis an hyb ids and he
implemen a ion o wa e managemen s a egies, such as
ainwa e ha es ing and i iga ion, a e essen ial o mi iga e
he ad e se e ec s o wa e s ess. Addi ionally, he use o
mulch and co e c ops can imp o e soil mois u e e en ion,
he eby enhancing he esilience o co n c ops in he ace o
e a ic ain all.
Pho ope iod sensi i i y is ano he ecophysiological
aspec ha wa an s a en ion in he con ex o co n
cul i a ion in he opics. Ou indings sugges ha he
pho ope iod esponse o co n can in luence lowe ing ime
and, ul ima ely, yield. In opical egions whe e dayleng h
emains ela i ely cons an h oughou he yea , he
selec ion o pho ope iod-insensi i e a ie ies may o e a
s a egic ad an age, allowing o mul iple c opping cycles
and inc eased o e all p oduc i i y. This aligns wi h he
wo k o Edmeades e al. (1999), who epo ed ha he
adap abili y o co n o a ying pho ope iods can enhance
i s cul i a ion in di e se en i onmen s. Fu u e b eeding
p og ams should p io i ize he de elopmen o such
a ie ies, pa icula ly in egions whe e a me s ace he
dual challenges o clima e a iabili y and ood secu i y.
In addi ion o gene ic imp o emen s, ag onomic p ac ices
mus also adap o he ecophysiological cons ain s imposed
by opical condi ions. Ou s udy emphasizes he
impo ance o in eg a ed c op managemen p ac ices,
including he use o co e c ops, c op o a ion, and soil
e ili y managemen , o enhance co n esilience agains
bio ic and abio ic s esses. The adop ion o p ecision
ag icul u e echnologies can u he op imize inpu s,
ensu ing ha wa e and nu ien s a e applied e icien ly,
hus maximizing yield po en ial while minimizing
en i onmen al impac .
Finally, he implica ions o ou indings ex end beyond
immedia e ag onomic p ac ices. Unde s anding he
ecophysiological esponses o co n o opical condi ions
can in o m policy decisions ela ed o ood secu i y and
clima e adap a ion s a egies. As global empe a u es
con inue o ise and wea he pa e ns become inc easingly
Ecophysiological aspec s o co n g ow h and de elopmen unde opical condi ions 6
unp edic able, i is impe a i e ha s akeholde s in
ag icul u e, including policymake s, esea che s, and
a me s, collabo a e o de elop comp ehensi e s a egies
ha enhance he esilience o co n p oduc ion sys ems.
5-Conclusion
The esul s o his s udy on he ecophysiological aspec s o
co n g ow h and de elopmen unde opical condi ions
p esen bo h challenges and oppo uni ies. By ocusing on
he physiological esponses o hea , wa e s ess, and
pho ope iod, and by in eg a ing hese insigh s in o b eeding
and ag onomic p ac ices, we can enhance he sus ainabili y
and p oduc i i y o co n cul i a ion in opical egions.
Fu u e esea ch should con inue o explo e he gene ic,
physiological, and en i onmen al in e ac ions ha go e n
co n pe o mance, ul ima ely con ibu ing o a mo e
esilien ag icul u al sys em capable o mee ing he
demands o a g owing global popula ion.
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