Influence of high temperature stress on growth, phenology and yield performance of mungbean [Vigna radiata (L.) Wilczek] under managed growth conditions

Sharma, Lalit; Priya, M. Shanthi; HanumanthaRao, Bindumadhava; Nair, Ramakrishnan M.; Nayyar, Harsh

doi:10.1016/j.scienta.2016.10.033

Cited by 79 publications

(70 citation statements)

References 42 publications

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“…Heat stress reduced the seed number per plant due to reduced pod set and fewer filled pods, which agrees with previous observations on chickpea, mungbean and lentil . Heat stress also reduced seed size, resulting in much lower seed weights per plant and individual seed weights, which appears to be related to a reduction in the seed filling rate and duration.…”

Section: Discussionsupporting

confidence: 90%

“…Heat stress may restrict mobilization at the vascular or enzymatic level to reduce the flow of sucrose to developing seeds . We noticed compression of the xylem and phloem in the pod stalks of both lentil genotypes, which might restrict the flow of assimilates to developing grains.…”

Section: Discussionmentioning

confidence: 74%

“…Heat stress also reduced seed size, resulting in much lower seed weights per plant and individual seed weights, which appears to be related to a reduction in the seed filling rate and duration. In general, the phenology of legumes is accelerated under high temperature . Seed filling is primarily associated with the import of sucrose, and precursors of proteins, fats and minerals from the leaves; any environmental factors affecting the production, transport and utilization of these components would influence seed development .…”

Section: Discussionmentioning

confidence: 99%

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Impact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypes

et al. 2018

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

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Impact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypes

et al. 2018

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“…Our results indicated that the leaves of LS plants under heat stress were adversely affected and responded by increasing their temperature, reducing leaf water status and inhibiting stomatal conductance, which agrees with previous reports on other crops (Prasad et al, 2017). Heat stress results in decrease in water content of the cells, reducing cell size and, in due course, restricting plant growth (Rodriguez et al, 2005; Sharma et al, 2016). Heat negatively impacts leaves by reducing leaf water potential, reducing leaf area and causing premature leaf senescence, all of which affect a plant's total photosynthesis performance (Greer and Weedon, 2012; Sharma et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Heat stress results in decrease in water content of the cells, reducing cell size and, in due course, restricting plant growth (Rodriguez et al, 2005; Sharma et al, 2016). Heat negatively impacts leaves by reducing leaf water potential, reducing leaf area and causing premature leaf senescence, all of which affect a plant's total photosynthesis performance (Greer and Weedon, 2012; Sharma et al, 2016). Consequently, heat stress increased membrane damage, which inhibited photosynthetic function and chlorophyll concentration, a finding similar to heat-stressed plants in chickpea (Kaushal et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Identification of High-Temperature Tolerant Lentil (Lens culinaris Medik.) Genotypes through Leaf and Pollen Traits

et al. 2017

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Rising temperatures are proving detrimental for various agricultural crops. Cool-season legumes such as lentil (Lens culunaris Medik.) are sensitive to even small increases in temperature during the reproductive stage, hence the need to explore the available germplasm for heat tolerance as well as its underlying mechanisms. In the present study, a set of 38 core lentil accessions were screened for heat stress tolerance by sowing 2 months later (first week of January; max/min temperature >32/20°C during the reproductive stage) than the recommended date of sowing (first week of November; max/min temperature <32/20°C during the reproductive stage). Screening revealed some promising heat-tolerant genotypes (IG2507, IG3263, IG3297, IG3312, IG3327, IG3546, IG3330, IG3745, IG4258, and FLIP2009) which can be used in a breeding program. Five heat-tolerant (HT) genotypes (IG2507, IG3263, IG3745, IG4258, and FLIP2009) and five heat-sensitive (HS) genotypes (IG2821, IG2849, IG4242, IG3973, IG3964) were selected from the screened germplasm and subjected to further analysis by growing them the following year under similar conditions to probe the mechanisms associated with heat tolerance. Comparative studies on reproductive function revealed significantly higher pollen germination, pollen viability, stigmatic function, ovular viability, pollen tube growth through the style, and pod set in HT genotypes under heat stress. Nodulation was remarkably higher (1.8–22-fold) in HT genotypes. Moreover, HT genotypes produced more sucrose in their leaves (65–73%) and anthers (35–78%) that HS genotypes, which was associated with superior reproductive function and nodulation. Exogenous supplementation of sucrose to in vitro-grown pollen grains, collected from heat-stressed plants, enhanced their germination ability. Assessment of the leaves of HT genotypes suggested significantly less damage to membranes (1.3–1.4-fold), photosynthetic function (1.14–1.17-fold) and cellular oxidizing ability (1.1–1.5-fold) than HS genotypes, which was linked to higher relative leaf water content (RLWC) and stomatal conductance (gS). Consequently, HT genotypes had less oxidative damage (measured as malondialdehyde and hydrogen peroxide concentration), coupled with a higher expression of antioxidants, especially those of the ascorbate–glutathione pathway. Controlled environment studies on contrasting genotypes further supported the impact of heat stress and differentiated the response of HT and HS genotypes to varying temperatures. Our studies indicated that temperatures >35/25°C were highly detrimental for growth and yield in lentil. While HT genotypes tolerated temperatures up to 40/30°C by producing fewer pods, the HS genotypes failed to do so even at 38/28°C. The findings attributed heat tolerance to superior pollen function and higher expression of leaf antioxidants.

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Cultural festival, climate change in different phenological phases, and lychee yield in China

Yan

Chen

et al. 2022

Agronomy Journal

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As one of the biggest agroproducts producers, China plays an important role in the global supply. Yet, climate change inevitably threatens their production and leads to tremendous losses. Furthermore, climatic and nonclimatic factors are likely to influence their producing behaviors and yields. Accordingly, this work aims to explore both the qualitative and quantitative nexus between climate change, nonclimatic drivers, and agroproduct yield in China. We choose lychee (Litchi chinensis Sonn.), with world's largest production in China and one of the most demanding agroproduct for climatic conditions, as the subject. A two-way fixed-effect Poisson model with robust standard error is developed based on county-level panel data in 39 main producing counties in China along with climatic and cultural festival factors from 2014 to 2019. The main conclusions are as follows: (a) the lychee culture festival, a nonclimatic driver, has negative effect on lychee yield, and this is a novel effect pathway theoretically and we verify it empirically; (b) climate changes in various phenological phases are significantly correlated to lychee yield; precipitation during the exposure phase or flowering phase has negative effect, and minimum temperature during the heading phase has positive effect, which is the first paper in this field; and (c) a new method is developed to analyze nonnegative yield and production, which could also be applied in other industries.

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Influence of high temperature stress on growth, phenology and yield performance of mungbean [Vigna radiata (L.) Wilczek] under managed growth conditions

Cited by 79 publications

References 42 publications

Impact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypes

Impact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypes

Identification of High-Temperature Tolerant Lentil (Lens culinaris Medik.) Genotypes through Leaf and Pollen Traits

Cultural festival, climate change in different phenological phases, and lychee yield in China

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