Efficient Root System in Legume Crops to Stress Environments

Abdelhamid, Magdi T.

doi:10.1007/978-90-481-3709-1_13

Cited by 5 publications

(2 citation statements)

References 62 publications

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“…The deep root systems in cereal crops and the relatively short roots in legumes may explain their relative performance in these trials (Gonzalez-Rizzo et al 2009;Abdelhamid 2010). Under normal water conditions, wheat and barley have robust root systems that reach laterally 12-18 in.…”

Section: Impacts Of Extreme Weather On Sole and Intercropsmentioning

confidence: 99%

“…and to depths of 3-6 feet, which afford access to more water resources (Weaver 1926). Roots of legumes are generally shorter than cereals, and under drought their root systems are smaller (Gonzalez-Rizzo et al 2009;Abdelhamid 2010). This disparity in root system size may have resulted in the cereals having an advantage over legumes in exploiting the existing soil water.…”

Section: Impacts Of Extreme Weather On Sole and Intercropsmentioning

confidence: 99%

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Comparison of resilience of different plant teams to drought and temperature extremes in Denmark in sole and intercropping systems

Sears

Shah

Lehmann

et al. 2021

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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Intercropping (IC) can reduce nitrogen fertilizer requirements, supress weeds, and improve crop yields and yield stability. Three field trials were conducted in Denmark in 2018 with intercropping and sole crops (SC) using spring wheat, barley, faba bean and field pea to compare productivity under five fertilizer levels.The trials were carried out using in a split-plot design with four. Anomalous weather during the 2018 cropping season created drought conditions and high temperatures above 31°C.No effect of fertilizer treatment was found, and total dry matter and grain yields were supressed in all systems. Wheat grain yields averaged 2.14 t ha −1 across systems, ranging from 1.58 t ha −1 as a component of the IC to 2.44 t ha −1 as SC, and barley grain yields averaged 2.35 t ha −1 . Faba bean yielded 1.78 t ha −1 as SC, but failed in the IC. Pea failed in both systems. Intercropping barley with cover crops had no effect on grain yield or total dry matter. These results suggest that intercropping provided no production advantage during a drought and illuminate the need to continue conducting research and breeding on drought-resistant cultivars.

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Section: Impacts Of Extreme Weather On Sole and Intercropsmentioning

confidence: 99%

Section: Impacts Of Extreme Weather On Sole and Intercropsmentioning

confidence: 99%

Comparison of resilience of different plant teams to drought and temperature extremes in Denmark in sole and intercropping systems

Sears

Shah

Lehmann

et al. 2021

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

View full text Add to dashboard Cite

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Genetic variability for root and shoot traits in a lentil (Lens culinaris Medik.) recombinant inbred line population and their association with drought tolerance

Idrissi

Houasli

Udupa³

et al. 2015

Euphytica

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Lentil (Lens culinaris Medik.) is usually grown under rainfed environments and often encounters drought stress from limited rainfall. Little information is available about shoot and root traits in association with drought tolerance. We studied variability for root and shoot traits related to drought tolerance using an F6–8 population of 133 recombinant inbred lines (RILs) from the cross ILL6002 × ILL5888. We found important variation between genotypes and also high variation in heritability values for root and shoot traits at 38 days after sowing the parents and RILs under both well-watered and drought-stressed treatments during two consecutive seasons in the greenhouse. The higher heritability values were obtained under drought stress treatment and suggest that selection in water-limited environments would be more effective in achieving genetic gains. Drought had reduced trait values, except root–shoot ratio that was likely to be enhanced underlying the importance of this trait for drought tolerance. The quantitative and continuous distributions of variation are the evidence for polygenic control of these traits and the possibility of mapping the quantitative trait loci (QTL). Statistically significant associations between root and shoot traits such as dry shoot biomass and chlorophyll content were noted, highlighting the reliability of indirect selection for underground traits (root) based on these aboveground traits in breeding programs. Significant correlations and regressions were demonstrated between dry root biomass, lateral root number, root surface area, dry shoot biomass, root–shoot ratio, chlorophyll content and drought tolerance as estimated by wilting severity from limited water supply. This shows the importance of a well-developed root system and early biomass development for drought tolerance. Identification and mapping of QTL related to studied traits in this population would be a first step for starting marker-assisted selection

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Unlocking the potential of orphan legumes

Cullis

Kunert

2016

EXBOTJ

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Orphan, or underutilized, legumes are domesticated legumes with useful properties, but with less importance than major world crops due to use and supply constraints. However, they play a significant role in many developing countries, providing food security and nutrition to consumers, as well as income to resource-poor farmers. They have been largely neglected by both researchers and industry due to their limited economic importance in the global market. Orphan legumes are better adapted than the major legume crops to extreme soil and climatic conditions, with high tolerance to abiotic environmental stresses such as drought. As a stress response they can also produce compounds with pharmaceutical value. Orphan legumes are therefore a likely source of important traits for introduction into major crops to aid in combating the stresses associated with global climate change. Modern large-scale genomics techniques are now being applied to many of these previously understudied crops, with the first successes reported in the genomics area. However, greater investment of resources and manpower are necessary if the potential of orphan legumes is to be unlocked and applied in the future.

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Efficient Root System in Legume Crops to Stress Environments

Cited by 5 publications

References 62 publications

Comparison of resilience of different plant teams to drought and temperature extremes in Denmark in sole and intercropping systems

Comparison of resilience of different plant teams to drought and temperature extremes in Denmark in sole and intercropping systems

Genetic variability for root and shoot traits in a lentil (Lens culinaris Medik.) recombinant inbred line population and their association with drought tolerance

Unlocking the potential of orphan legumes

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