Association Study of Morphological and Physiological Traits with Yield in Groundnut Genotypes under Terminal Drought Condition

Hampannavar, Mahesh R; Khan, Hasan

doi:10.20546/ijcmas.2019.801.075

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Recent research indicates that the drought-related traits SCMR, SLA and RW C are reliable for drought tolerance selection under drought stress (Banavath et al, 2018;Hampannavar and Khan, 2019) and were significantly differentiated in the RIL population. Drought stress affected the physiological and yield parameters and the mean of the traits over two seasons is discussed below (Table 2).…”

Section: Variability For the Physiological Traitsmentioning

confidence: 99%

Phenotyping RIL Population to Identify Water Deficit Tolerant Lines in Groundnut (Arachis hypogaea L.)

Latha

Anitha

Kumar

et al. 2022

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Background: Genotype sensitivity to mid-season drought suggests the possibility of identifying genotypes with high yield potential and low sensitivity to mid-season droughts. The overall objective of the present research was to select genotypes with high tolerance to mid-season moisture stress. This effort includes assessing the variation of physiological and productive traits among RIL population lines, assessing the range of correlation for physiological and productive traits across two seasons and identifying a set of contrasting material under drought stress conditions. Methods: To assess the recombinant inbred lines (RIL) under moisture stress, we screened RIL population of groundnut with 432 lines and parents under mid-season drought stress conditions in rabi for two years. During the drought stress period, soil moisture content (SMC) and temperatures were measured. SPAD chlorophyll meter reading (SCMR), specific leaf area (SLA), relative water content (RWC), visual wilting rate (VWR) and canopy temperature (CT) were recorded at the end of the stress period. Pod yield per plant (PYPP), kernel yield per plant (KYPP) and shelling percent (SP) were recorded at harvest. Result: Physiological traits and yield attributes varied significantly among the RIL population. The Genotype by Trait biplot (GT biplot) revealed that the yield attributes showed a positive association with RWC, SCMR and a negative association with SLA, VWR and CT. The inbred lines were classified as visually healthy with high physiological and high or moderate yield traits; visually wilting with low physiological and low yield traits under a drought environment. The identified superior and inferior lines werefurther utilized to analyze genomic regions and genes for drought tolerance in groundnut.

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Section: Variability For the Physiological Traitsmentioning

confidence: 99%

Phenotyping RIL Population to Identify Water Deficit Tolerant Lines in Groundnut (Arachis hypogaea L.)

Latha

Anitha

Kumar

et al. 2022

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“…Jeyaramraja & Thushara (2013) postulated a series of physiological reactions in peanut exposed to D. However, holistic studies in groundnut on the relationships among physiological, growth and yield parameters and their changes due to terminal D under natural field conditions are limited. As groundnut is mostly grown as rain-fed crop, it faces D during terminal stages of crop growth (Hampannavar & Khan, 2019), which results in reductions in yield and quality. Hence, it is essential to produce crops that bear D. Knowledge of drought tolerance mechanisms in legumes innately adjusted to D, such as groundnut, is essential in identifying markers for drought tolerance which in turn, can aid in plant breeding programmes.…”

Section: Introductionmentioning

confidence: 99%

DIFFERENTIAL RESPONSES OF CERTAIN ETHIOPIAN GROUNDNUT (Arachis hypogaea L.) VARIETIES VARYING IN DROUGHT TOLERANCE, TO TERMINAL DROUGHT STRESS

Jeyaramraja¹,

Woldesenbet²

2020

JEBAS

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Responses of drought tolerant (DT) and drought susceptible (DS) Ethiopian groundnut varieties to terminal drought stress were compared to determine the traits behind drought tolerance. Drought (D) induced from 91 to 105 days after sowing (DAS) reduced leaf RWC (relative water content, %), leaf area (cm 2 plant -1 ), Chl (chlorophyll, mg g -1 fresh weight), RDM (root dry mass, g plant -1 ), ADM (aboveground dry mass, g plant -1 ), TDM (total dry mass, g plant -1 ) and plant height (cm); however, D increased SLM (specific leaf mass, g m -2 ). High leaf RWC in DS types reinstated the hypothesis that capacity to save leaf water is not a method of drought tolerance. Although there were insignificant Chl differences between DT and DS types, dry matter accumulation (RDM and ADM) was higher in DT types, which is attributed to higher SLM in DT types. SLM had significant positive relationship with RDM. An increase in plant height without increase in leaf area explains drought susceptibility in DS types. Resumption of irrigation on 106 DAS resulted in an increase in leaf RWC; however, this accompanied no resurrection response in terms of studied physiological and growth parameters and thus, it was not possible to restore pod yield after D impaired groundnut growth. Certain parameters were higher in DT types, positively correlated with DRI (drought response index) and primarily decided by the genotype; such parameters were concluded to be the traits behind drought tolerance.

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Nutrient uptake and nutrient use efficiency of Valencia peanut genotypes with different levels of drought tolerance under terminal drought

Sathongkaen,

Vorasoot,

Kaewpradit

et al. 2024

Journal of Plant Nutrition

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Association Study of Morphological and Physiological Traits with Yield in Groundnut Genotypes under Terminal Drought Condition

Cited by 4 publications

References 12 publications

Phenotyping RIL Population to Identify Water Deficit Tolerant Lines in Groundnut (Arachis hypogaea L.)

Phenotyping RIL Population to Identify Water Deficit Tolerant Lines in Groundnut (Arachis hypogaea L.)

DIFFERENTIAL RESPONSES OF CERTAIN ETHIOPIAN GROUNDNUT (Arachis hypogaea L.) VARIETIES VARYING IN DROUGHT TOLERANCE, TO TERMINAL DROUGHT STRESS

Nutrient uptake and nutrient use efficiency of Valencia peanut genotypes with different levels of drought tolerance under terminal drought

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