Physiology of Stressed Crops

Gupta, U. S.

doi:10.1201/9780367813635

Cited by 4 publications

(3 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…It is widely known that phytohormones, including abscisic acid (ABA) or auxin, serve to regulate growth and development of organs, as well as plant responses to environmental stress (Gupta, 2005; Hale & Orcutt, 1987; Naqvi, 1999; Nilsen & Orcutt, 1996). Increased levels of ABA in plants exposed to drought stress are widely reported, and they regulate stomatal closure and reduce transpirational water loss (Gupta, 2005; Hale & Orcutt, 1987; Nilsen & Orcutt, 1996). However, a high concentration of ABA has negative effects on plant growth, inducing bud dormancy and inhibition of lateral branching, including that of tillers or rhizomes (Cai et al., 2018; Emery, Longnecker, & Atkins, 1998; Liu & Sherif, 2019; Pearce, Taylor, Robertson, Harker, & Daly, 1995; Phillips, 1975; Tucker & Mansfield, 1973).…”

Section: Introductionmentioning

confidence: 99%

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Effects of elevated carbon dioxide on drought tolerance and post‐drought recovery involving rhizome growth in Kentucky bluegrass

2020

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Drought tolerance and rapid post‐stress recovery are critical survival strategies for turfgrass management in areas with limited rainfall and irrigation. This study sought to determine whether elevated CO2 could improve drought tolerance in rhizomatous Kentucky bluegrass (Poa pratensis L.) by protecting rhizomes from stress damage and promote regrowth and regeneration of daughter plants from rhizomes upon rewatering. Plants (cv. ‘Baron’) were grown at elevated CO2 concentration (800 μl L−1) or ambient CO2 concentration (400 μl L−1) for 28 d and then exposed to well‐irrigated conditions (control) or drought stress by withholding irrigation for an additional 28 d, followed by rewatering in growth chambers. Elevated CO2–treated plants had significantly higher leaf relative water content, visual quality, and membrane stability during drought compared with ambient CO2–treated plants. Rhizome nodes of elevated CO2–treated plants maintained significantly higher viability and lower content of abscisic acid and auxin under drought stress. In response to rewatering, plants previously exposed to drought stress under elevated CO2 exhibited increased growth of new shoots measured as total shoot biomass and daughter‐plant biomass, and an increased number of rhizomes, as well as greater canopy density compared with plants at ambient CO2. This study suggested that elevated CO2 concentration was able to protect rhizomes from drought damage and reactivate rhizomes for regeneration of new plants when drought was relieved by irrigation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of elevated carbon dioxide on drought tolerance and post‐drought recovery involving rhizome growth in Kentucky bluegrass

2020

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“…Using different strategies, flax breeders have made great efforts to develop a salt tolerant flax cultivar (McHughen, 1987;El-Beltagi, 2008). One of the main factors limiting yield of flax is physiological drought in many regions of the world (Gupta, 2007). This situation, predicted to be the result of global climatic changes, significantly Vikender Kaur et al / J. Appl.…”

Section: Introductionmentioning

confidence: 99%

Linseed (Linum usitatissimum L.) genetic resources for climate change intervention and its future breeding

Kaur

Yadav

Wankhede

2017

JANS

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Linseed or flax (Linum usitatissimum L.), a multiple purpose crop valued for its seed oil, fibre, probiotic and nutraceutical properties, is adapted to different environments and agro-ecologies. Modern breeding techniques using only limited number of selected varieties have resulted in a loss of speciﬁc alleles and thus, reduction in total genetic diversity relevant to climate-smart agriculture. However, well-curated collections of landraces, wild linseed accessions and other Linum species exist in the gene banks and are important sources of new alleles. This review is primarily focused on the studies of genetic diversity of linseed species and evaluation related to tolerance to abiotic and biotic stress factors that could be useful for improving linseed through future promising breeding programs in addition to briefly discussing different morphotypes and nutraceutical importance. Wide diversity in linseed germplasm indicates a considerable potential for improving this crop for both agronomic and quality traits required for developing climate-resilience tailored to speciﬁc environments. Recent release of the flax genome sequence coupled with wide range of genomic and analytical tools in public domain has furthered understanding of molecular mechanisms for detailed study of the genes underlying flax adaptation to stress and diversity in commercially important accessions. Important climate related traits and their constituent genes are presented and key developments for the future highlighted emphasizing the urgent need to increase the use of genetically diverse germplasm to meet the emerging challenges in agricultural production and to conserve valuable genetic resources for the future.

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Qualitative Improvement of Crop Plants

2011

What's New About Crop Plants

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Physiology of Stressed Crops

Cited by 4 publications

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Effects of elevated carbon dioxide on drought tolerance and post‐drought recovery involving rhizome growth in Kentucky bluegrass

Effects of elevated carbon dioxide on drought tolerance and post‐drought recovery involving rhizome growth in Kentucky bluegrass

Linseed (Linum usitatissimum L.) genetic resources for climate change intervention and its future breeding

Qualitative Improvement of Crop Plants

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