Rooting traits of peanut genotypes with different yield responses to pre-flowering drought stress

Jongrungklang, Nuntawoot; Toomsan, B.; Vorasoot, Nimitr; Jogloy, Sanun; Boote, Kenneth J.; Hoogenboom, Gerrit; Patanothai, A.

doi:10.1016/j.fcr.2010.10.008

Cited by 62 publications

(58 citation statements)

References 26 publications

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“…The calculated RNS of all genotypes except ICGV 98348 were lower in 2011. In 2010/2011values were 0.82, 0.97, 0.99, and 0.90, respectively (Tables 4 and 5).…”

Section: Effects Of Water Stress On Rnsmentioning

confidence: 88%

“…In 2010/2011values were 0.82, 0.97, 0.99, and 0.90, respectively (Tables 4 and 5). This genotype had better N uptake under terminal drought with N-RNS of 1.06.…”

Section: Effects Of Water Stress On Rnsmentioning

confidence: 94%

“…Several physiological and morphological traits that have been associated with drought stress adaptation have been observed and used so far. Physiological traits such as SPAD chlorophyll meter reading, specific leaf area (Wright and Nageswara Rao, 1994;Arunyanark et al, 2009), biological N 2 -fixation (Pimtrach et al, 2008;Htoon et al, 2009), and root length density (RLD) (Songsri et al, 2008;Jongrungklang et al, 2011) have been used as surrogate traits and they could increase plant potential in a breeding scheme. Nonetheless, there is still a need to explore other mechanisms or traits to investigate the underlying mechanisms of drought tolerance in peanut.…”

Section: Introductionmentioning

confidence: 99%

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Nutrient uptakes and their contributions to yield in peanut genotypes with different levels of terminal drought resistance

Htoon¹,

Jogloy

Vorasoot³

et al. 2014

Turk J Agric For

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Different peanut yields under terminal drought might be due to the different nutrient uptakes among peanut genotypes. Nutrient uptake was presumed to be a drought-resistant trait and might involve drought tolerance mechanisms. The aims of this study, therefore, were to characterize the effect of terminal drought on peanut nutrient uptake and to investigate the genotypic variability of nutrient uptake and its interactions with terminal drought. Field experiments were conducted at the Field Crop

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“…The calculated RNS of all genotypes except ICGV 98348 were lower in 2011. In 2010/2011values were 0.82, 0.97, 0.99, and 0.90, respectively (Tables 4 and 5).…”

Section: Effects Of Water Stress On Rnsmentioning

confidence: 88%

“…In 2010/2011values were 0.82, 0.97, 0.99, and 0.90, respectively (Tables 4 and 5). This genotype had better N uptake under terminal drought with N-RNS of 1.06.…”

Section: Effects Of Water Stress On Rnsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Nutrient uptakes and their contributions to yield in peanut genotypes with different levels of terminal drought resistance

Htoon¹,

Jogloy

Vorasoot³

et al. 2014

Turk J Agric For

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“…Relatively few roots in deep layers would be sufficient to supply an ample amount of water to the plant when the topsoil is dry, provided that water is available at this depth (Gregory et al 1978;Sharp and Davies 1985). Indeed, the development of a larger proportion of the root structure at depth has been shown to contribute to higher grain yield in peanut (Jongrungklang et al 2011), more so than the RLD. Similarly, the extraction of more water in water stressed DREB1A transgenic peanut plants was related to higher root length density at depth (Vadez et al 2013a).…”

Section: Do Differences In Root Length Density and Water Uptake Relate?mentioning

confidence: 99%

Water: the most important ‘molecular’ component of water stress tolerance research

Vadez

Kholová

Zaman-Allah

et al. 2013

Functional Plant Biol.

104

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Abstract. Water deficit is the main yield-limiting factor across the Asian and African semiarid tropics and a basic consideration when developing crop cultivars for water-limited conditions is to ensure that crop water demand matches season water supply. Conventional breeding has contributed to the development of varieties that are better adapted to water stress, such as early maturing cultivars that match water supply and demand and then escape terminal water stress. However, an optimisation of this match is possible. Also, further progress in breeding varieties that cope with water stress is hampered by the typically large genotype Â environment interactions in most field studies. Therefore, a more comprehensive approach is required to revitalise the development of materials that are adapted to water stress. In the past two decades, transgenic and candidate gene approaches have been proposed for improving crop productivity under water stress, but have had limited real success. The major drawback of these approaches has been their failure to consider realistic water limitations and their link to yield when designing biotechnological experiments. Although the genes are many, the plant traits contributing to crop adaptation to water limitation are few and revolve around the critical need to match water supply and demand. We focus here on the genetic aspects of this, although we acknowledge that crop management options also have a role to play. These traits are related in part to increased, better or more conservative uses of soil water. However, the traits themselves are highly dynamic during crop development: they interact with each other and with the environment. Hence, success in breeding cultivars that are more resilient under water stress requires an understanding of plant traits affecting yield under water deficit as well as an understanding of their mutual and environmental interactions. Given that the phenotypic evaluation of germplasm/breeding material is limited by the number of locations and years of testing, crop simulation modelling then becomes a powerful tool for navigating the complexity of biological systems, for predicting the effects on yield and for determining the probability of success of specific traits or trait combinations across water stress scenarios.

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“…However, no relationship has been demonstrated between root/stem ratio and water deicit tolerance [19]. In addition, length or root density may have a direct relationship to this tolerance [20].…”

Section: Efect On Growth and Water Uptakementioning

confidence: 99%

Alfalfa and Its Symbiosis Responses to Osmotic Stress

Mouradi¹,

Farissi²,

Bouizgaren³

et al. 2018

New Perspectives in Forage Crops

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Alfalfa (Medicago sativa L.) is one of the most cultivated forage legumes in Morocco thanks to its great adaptation to the climatic conditions of this country, its high protein content and its ability to ix atmospheric nitrogen in symbiosis with rhizobia. Environmental stresses such as drought and salinity constitute a major factor limiting the symbiotic nitrogen ixation and legume productivity. In the last decades, this process has interested scholars in understanding the implication of these strains in legume stress tolerance in order to make these symbioses more eicient under diicult conditions. Seed osmopriming is a great technique in the amelioration of seed germination and seedlings growth in responses to several abiotic stress conditions. In this chapter, the efects of water deicit on the Moroccan alfalfa populations and their symbiotic association with rhizobia were discussed. Besides, osmopriming could make these symbioses more eicient especially under stress conditions.

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Rooting traits of peanut genotypes with different yield responses to pre-flowering drought stress

Cited by 62 publications

References 26 publications

Nutrient uptakes and their contributions to yield in peanut genotypes with different levels of terminal drought resistance

Nutrient uptakes and their contributions to yield in peanut genotypes with different levels of terminal drought resistance

Water: the most important ‘molecular’ component of water stress tolerance research

Alfalfa and Its Symbiosis Responses to Osmotic Stress

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