Post-flowering drought stress response of post-rainy sorghum genotypes

Rakshit, Sujay; Swapna, M.; Dalal, Monika; Sushma, G.; Ganapathy, K. N.; Dhandapani, A.; Muthusamy, Karthikeyan; Talwar, H. S.

doi:10.1007/s40502-015-0187-y

Cited by 10 publications

(7 citation statements)

References 13 publications

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“…Despite the variability, a narrow range of variation for DF was noted in all groups between irrigated and drought‐stressed conditions in both years (Table 2). Rakshit et al., (2016) reported a differential behaviour of genotypes under drought regarding flowering, where some genotypes had earlier flowering while others had late flowering. The similar performance of hybrids for DF even under contrasting water availability conditions verified here is an interesting result since these hybrids demonstrate certain predictability of behaviour, maintaining or varying in a few days their cycle under unfavourable water conditions.…”

Section: Discussionmentioning

confidence: 99%

Grain sorghum hybrids under drought stress and full‐irrigation conditions in the Brazilian Semiarid

Menezes

Silva

Teodoro

et al. 2021

J Agronomy Crop Science

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Considered one of the most important cereals in the world, especially in developing countries, grain sorghum [Sorghum bicolor (L.) Moench] is a tropical species belonging to the Poaceae family, widely cultivated for human and animal feed, fodder and biofuel production (Kumar et al., 2011;Souza et al., 2020). It is a C4 metabolism plant, with high photosynthetic efficiency and high tolerance to abiotic stresses, particularly to drought stress (Adams & Erickson, 2017;Schlegel et al., 2018). This crop requires a lower amount of water for its development when compared to other cereals such as wheat and corn (Endris et al., 2021;

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Section: Discussionmentioning

confidence: 99%

Grain sorghum hybrids under drought stress and full‐irrigation conditions in the Brazilian Semiarid

Menezes

Silva

Teodoro

et al. 2021

J Agronomy Crop Science

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“…According to Rakshit et al (2016) In 2016, all genotypes showed better results when subjected to full irrigation (Table 7).…”

Section: Genotypesmentioning

confidence: 99%

Agronomic and Physiological Indicators for Selection of Water Restriction-Tolerant Grain Sorghum Genotypes

Oliveira

Aspiazú

Magalhães

et al. 2020

RBMS

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Selection of tolerant plants is essential to meet the challenges of food production. The objective of this study was to evaluate agronomic and physiological characteristics as indicators for the selection of water restriction-tolerant grain sorghum genotypes. The experiments were conducted in 2014, 2015 and 2016. Two trials were installed in each year, one subjected to full irrigation and the other to water restriction. In the first one, irrigation was performed periodically, at a 2-day interval, to maintain soil moisture close to field capacity. In the second one, irrigation was suspended in the pre-flowering period, keeping the restriction for 30 days. Four sorghum genotypes were used: 9503062 and 9618158 - drought sensitive (S); 9910032 and P898012 - drought tolerant (T). The experimental design was randomized blocks with four replicates. Stomatal conductance, relative chlorophyll content, photosynthetically active leaf area, plant height and yield were evaluated. Joint analysis of the experiments subjected to full irrigation and water restriction of the three years was performed. Under water restriction it was not possible to distinguish between sensitive and tolerant materials. The characteristics evaluated in this experiment did not allow a conclusive distinction between tolerant and sensitive genotypes.

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“…Two different types of stress responses were observed in sorghum at distinct time interval, i.e., pre-flowering and post-flowering drought response (Harris et al 2007). In sorghum, the green leaf area retention during the grain-filling stage has been found to be linked with sorghum post-flowering drought tolerance (Rakshit et al 2016). As reported by Deshpande et al (2016), seven sources for stay-green trait in sorghum have been used for QTL identification, such as B35 (Tuinstra et al 1997;Crasta et al 1999;Subudhi et al 2000;Xu 2000a, b;Sanchez et al 2002;Harris et al 2007), E36-1 (Haussmann et al 2002), QL41 (Tao et al 2000), SC56 (Kebede et al 2001), 296B (Srinivas et al 2009), SC283 (Sabadin et al 2012), and SDS 1948-3 (Habyarimana et al 2010.…”

Section: Droughtmentioning

confidence: 99%

Genomic-Assisted Enhancement in Stress Tolerance for Productivity Improvement in Sorghum

Romana

Chander

Deshpande

et al. 2018

Biotechnologies of Crop Improvement, Volume 3

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Sorghum [Sorghum bicolor (L.) Moench], the fifth most important cereal crop in the world after wheat, rice, maize, and barley, is a multipurpose crop widely grown for food, feed, fodder, forage, and fuel, vital to the food security of many of the world's poorest people living in fragile agroecological zones. Globally, sorghum is grown on ~42 million hectares area in ~100 countries of Africa, Asia, Oceania, and the Americas. Sorghum grain is used mostly as food (~55%), in the form of flat breads and porridges in Asia and Africa, and as feed (~33%) in the Americas. Stover of sorghum is an increasingly important source of dry season fodder for livestock, especially in South Asia. In India, area under sorghum cultivation has been drastically come down to less than one third in the last six decades but with a limited reduction in total production suggesting the high-yield potential of this crop. Sorghum productivity is far lower compared to its genetic potential owing to a limited exploitation of genetic and genomic resources developed in the recent past. Sorghum production is challenged by various abiotic and biotic stresses leading to a significant reduction in yield. Advances in modern genetics and genomics resources and tools could potentially help to further strengthen sorghum production by accelerating the rate of genetic gains and expediting the breeding cycle to develop cultivars with enhanced yield stability under stress. This chapter reviews the advances made in generating the genetic and genomics resources in sorghum and their interventions in improving the yield stability under abiotic and biotic stresses to improve the productivity of this climate-smart cereal.

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Post-flowering drought stress response of post-rainy sorghum genotypes

Cited by 10 publications

References 13 publications

Grain sorghum hybrids under drought stress and full‐irrigation conditions in the Brazilian Semiarid

Grain sorghum hybrids under drought stress and full‐irrigation conditions in the Brazilian Semiarid

Agronomic and Physiological Indicators for Selection of Water Restriction-Tolerant Grain Sorghum Genotypes

Genomic-Assisted Enhancement in Stress Tolerance for Productivity Improvement in Sorghum

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