Assessing impact of thermal units on growth and development of mustard varieties grown under optimum sown conditions

Islam, M. R.; Alam, M. S.; Kamal, MM; Zaman, R.; Hossain, Akbar; Alharby, Hesham F.; Bamagoos, Atif A.; Farooq, Muhammad; Hossain, Jobayer; Barutçular, Celaleddin; Çığ, Fatih; Sabagh, Ayman El

doi:10.54386/jam.v21i3.249

Cited by 8 publications

(1 citation statement)

References 5 publications

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“…Higher temperatures during the early growth phases of rice at Mohanpur might have contributed to faster vegetative growth from sowing to tillering. Islam et al (2019) reported distinct variations in the duration of phenological stages mainly due to the thermal environment of the crop. The rate of tillering in rice tends to increase under an elevated temperature regime.…”

Section: Effect Of Sowing Environment On Rice Phenophasementioning

confidence: 99%

Critical weather limits for paddy rice under diverse ecosystems of India

et al. 2023

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Rice yields are largely influenced by variability in weather. Here, we demonstrate the effect of weather variables viz., maximum and minimum temperatures, rainfall, morning and evening relative humidity, bright sunshine hours on the yield of rice cv. Swarna, grown across five rice ecologies of India through field experiments during kharif (wet) season (Jun-Sept.). Critical thresholds of weather elements were identified for achieving above average, average and below average yield for each ecology. The investigation could determine how different weather elements individually and collectively affect rice yield in different rice ecosystems of India. While a sudden increase in minimum temperature by 8-10 °C (> 30 °C) during reproductive period resulted in 40-50 per cent yield reduction at Mohanpur, a sudden decrease (< 20 °C) caused yield decline at Dapoli. The higher yields may be attributed to a significant difference in bright sunshine hours between reproductive phases of above-average and below-average yield years (ranging from 2.8 to 7.8 hours during P5 stages and 1.7 to 5.1 during P4 stages). Rice cultivar Swarna performed differently at various sowing dates in a location as well as across locations (6650 kg ha-1 at Dapoli to 1101 kg ha-1 at Samastipur). It was also found that across all locations, the above average yield could be associated with higher range of maximum temperature compared to that of below average yield. Principal component analysis explained 77 per cent of cumulative variance among the variables at first growth stage, whereas 70 per cent at second growth stage followed by 74 per cent and 66 per cent at subsequent growth stages. We found that coastal locations, in contrast to inland ones, could maximize the yield potential of the cultivar Swarna, due to the longer duration of days between panicle initiation to physiological maturity. We anticipate that the location-specific thresholds of weather factors will encourage rice production techniques that are climate resilient.

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Section: Effect Of Sowing Environment On Rice Phenophasementioning

confidence: 99%

Critical weather limits for paddy rice under diverse ecosystems of India

et al. 2023

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Evaluation of Brassica species for growth, yield and heat use efficiency under nitrogen nutrition and iron sulphide nanoparticles application

Mahto,

Singh,

Ankita

et al. 2024

Scientia Horticulturae

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Efficiency in biomass accumulation of diploid potato cultivars (Solanum tuberosum, Phureja Group) in contrasting environments at elevation

Lizarazo-Peña,

Nústez-López,

Darghan

2023

Bragantia

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Phureja Group potato is endemic and important for northern Andean countries such as Colombia, Ecuador and Venezuela, where it is grown over a wide range of elevation. The objective of the study was to compare the biomass accumulation of five potato cultivars in three contrasting environments in elevation from a latent response variable of vector nature, analogous to "heat efficiency index".Destructive samplings were carried to obtain biomass. A biomass accumulation model was proposed using a latent response variable that integrates total biomass per plant with thermal time, analogous to the "heat use efficiency index". The proposed latent response variable allowed measuring the efficiency in biomass accumulation and making comparisons between elevations and cultivars, with a nonparametric longitudinal variance analysis. The middle location was where the highest efficiency in accumulation of total biomass was observed. The accumulation of total biomass was slow at the higher elevation location during the vegetative stage, but it increased considerably after the initiation of the growth of tubers. The study showed a clear genotype-environment interaction, suggesting that biomass accumulation changes with elevation according to the cultivar. The methodology used in this study has the potential to be used in the longitudinal comparison of cultivars and environments, even when variations in elevation or temperature alter the length of growing cycles.

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Assessing impact of thermal units on growth and development of mustard varieties grown under optimum sown conditions

Cited by 8 publications

References 5 publications

Critical weather limits for paddy rice under diverse ecosystems of India

Critical weather limits for paddy rice under diverse ecosystems of India

Evaluation of Brassica species for growth, yield and heat use efficiency under nitrogen nutrition and iron sulphide nanoparticles application

Efficiency in biomass accumulation of diploid potato cultivars (Solanum tuberosum, Phureja Group) in contrasting environments at elevation

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