Heat Use Efficiency of Indian mustard (Brassica juncea) at Different Phenophases in Western Haryana, India

Ahatsham, Mohammad; Singh, Surender; Dagar, Chandra Sekher

doi:10.20546/ijcmas.2018.706.234

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Inside this range there is the optimum, where plant development is not limited, while between cardinal and optimal limits the pace of plant development is variably reduced (Mariani et al, 2013). Our results on GDD at various phenological stages are in conformity to those of Ahatsham et al (2018) where declining trend in GDD with delayed planting dates has been reported. The varietal difference in mustard for facing durations were reported by Lal et al (2020) under shade and open conditions.…”

Section: Growing Degree Days (Gdd)supporting

confidence: 82%

“…Average HUE in timely sown condition at seed yield (0.95 kg ha -1 ºC-days -1 ) and biological yield (5.03 kg ha -1 ºC-days -1 ) were significantly greater than the late sown condition (Table 2). HUE depends on biomass production and the production increased with increase of heat use efficiency (Ahatsham et al, 2018), a measure of the amount of dry matter produced per unit of thermal unit .Further the decrease in HUE in the stressful environment was dependent on lower biomass production. Similarly decrease in HUE was reported recently by Prasad et al (2020) in Indian mustard which are in accordance with our are findings.…”

Section: Heat Use Efficiency (Hue)mentioning

confidence: 99%

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Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

KAUR¹

2022

APSR

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An experiment was planned to visualize the impact of terminal heat stress on yield potentials of late sown mustard cultivars under the changing climatic conditions. A set of fifteen B. juncea genotypes were evaluated at two planting dates during two winter seasons. Late planted genotypes faced heat stress during post anthesis/seed filling stage which negatively influenced the movements of photosynthates to developing sinks thus inhibiting synthetic processes, lowering seed weight and seed yield and may even hamper seed quality. Onset of flowering and siliquing were delayed but the completion of flowering and siliquae formation was earlier in the late planted genotypes. Seed filling was impeded by high temperature in late planting causing ≥50% decline in seed yield. Average accumulated growing degree days (AGDD) for phenological stages were higher in normal sown than the late sown crop. AGDD witnessed an increasing trend for flowering and fruiting behaviour in both the sowing dates. However, 50% flowering in late sown crop took 4 accumulated GDDoC days more. Average heat use efficiency was found to be significantly higher in normal sown genotypes for seed (0.95 kg ha-1 ºC-days-1) and biological (0.53 kg ha-1 ºC-days-1) yield relative to the late sown genotypes for seed (0.50 kg ha-1 ºC-days-1) and biological yield (2.71 kg ha-1 ºC-days-1). Seed yield under late sown condition had positive and significant correlation with siliquing duration (r= 0.600*) and reproductive phase (r= 0.558*) whereas, negative with flowering completion (r= -0.573*) and siliqua initiation (r= -0.519*). Based on the results IAN was the best genotype for delayed sowings.

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Section: Growing Degree Days (Gdd)supporting

confidence: 82%

Section: Heat Use Efficiency (Hue)mentioning

confidence: 99%

Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

KAUR¹

2022

APSR

View full text Add to dashboard Cite

show abstract

Section: Growing Degree Days (Gdd)supporting

confidence: 82%

Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

KAUR

2022

APSR

View full text Add to dashboard Cite

An experiment was planned to visualize the impact of terminal heat stress on yield potentials of late sown mustard cultivars under the changing climatic conditions. A set of fifteen B. juncea genotypes were evaluated at two planting dates during two winter seasons. Late planted genotypes faced heat stress during post anthesis/seed filling stage which negatively influenced the movements of photosynthates to developing sinks thus inhibiting synthetic processes, lowering seed weight and seed yield and may even hamper seed quality. Onset of flowering and siliquing were delayed but the completion of flowering and siliquae formation was earlier in the late planted genotypes. Seed filling was impeded by high temperature in late planting causing ≥50% decline in seed yield. Average accumulated growing degree days (AGDD) for phenological stages were higher in normal sown than the late sown crop. AGDD witnessed an increasing trend for flowering and fruiting behaviour in both the sowing dates. However, 50% flowering in late sown crop took 4 accumulated GDDoC days more. Average heat use efficiency was found to be significantly higher in normal sown genotypes for seed (0.95 kg ha-1 ºC-days-1 ) and biological (0.53 kg ha-1 ºC-days-1 ) yield relative to the late sown genotypes for seed (0.50 kg ha-1 ºC-days-1 ) and biological yield (2.71 kg ha-1 ºC-days-1 ). Seed yield under late sown condition had positive and significant correlation with siliquing duration (r= 0.600*) and reproductive phase (r= 0.558*) whereas, negative with flowering completion (r= -0.573*) and siliqua initiation (r= -0.519*). Based on the results IAN was the best genotype for delayed sowings.

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“…Heat use efficiency was found to be higher in variety RGN-73 at seed (4.2 kg ha -1 ºC-days -1 ), stover (15.5 kg ha -1 ºC-days -1 ) and biological yield (19.7 kg ha -1 ºC-days -1 ) followed by RGN-229, Pusa bold and RH-30 (Table 5). Heat use efficiency in open environmental condition treatment at seed (4.4 kg ha -1 ºC-days -1 ), stover (kg ha -1 ºC-days -1 ) and biological yield (19.3 kg ha -1 ºC-days -1 ) were significantly greater than neem shade environmental condition because heat use efficiency depended on biomass production and production increased with increase of heat use efficiency (Ahatsham et al, 2018), which is a measure of amount of dry matter production per unit of thermal unit, worked out as per procedures reported by Sahu et al, (2007). HUE increased from vegetative growth to reproductive growth stages; however, it decreased slightly at physiological maturity of the crop (Gupta et al, 2017;Lal et al, 2017).…”

Section: Heat Use Efficiency (Hue)mentioning

confidence: 90%

Performance of mustard (Brassica juncea L.) varieties under Azadirachta indica L. shade and open condition in hot-arid region of Rajasthan

et al. 2021

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The mustard production and productivity of the hot arid region of Rajasthan is dominated by both genetic makeup and environmental conditions. An experiment was conducted with four mustard varieties (RGN-73, RGN-229, RH-30 and Pusa bold) in two growing environments (open environment and neem shade). Pusa bold gave significantly higher plant height than other varieties. Among varieties, RGN-73 had significantly higher number of branches per plant, dry matter accumulation per plant, siliquae per plant, seed yield, stover yield, biological yield, harvest index and heat use efficiency than other varieties. However, significantly higher test weight was in Pusa bold variety. Under open environment condition, significantly higher growth, yield attributes, yield, harvest index and heat use efficiency were found as compared to neem shade environment. The results revealed that variety RGN-229 took more days for completion of life cycle as compared to other varieties, hence RGN-229 variety required significantly more degree days than other varieties. The pheno-thermal index was significantly higher in open condition.

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Heat Use Efficiency of Indian mustard (Brassica juncea) at Different Phenophases in Western Haryana, India

Cited by 3 publications

References 3 publications

Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

Terminal heat stress modulates growing degree days, heat use efficiency and yield stability index in brassica juncea

Performance of mustard (Brassica juncea L.) varieties under Azadirachta indica L. shade and open condition in hot-arid region of Rajasthan

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