Inter-relationship and Path Coefficient Analysis for Biometric Traits in Drought Tolerant Wheat (Triticum aestivum L.)

Khan, Ayub; Azam, Farooq; Ali, Abid; Tariq, Muhammad; Amin, Muhammad

doi:10.3923/ajps.2005.540.543

Cited by 19 publications

(5 citation statements)

References 4 publications

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“…Association studies between spike length, spikelet numbers and grain yield indicated a tendency of spike length to increase with increase of spikelet numbers and grain yield. Similar results were reported by Khaliq et al [24] and Khan et al [25,26].…”

Section: Resultssupporting

confidence: 91%

Character Association in M4 Micro Mutants in Wheat (Triticum aestivum L.)

Rohit

Singh²,

Negi³

2022

CJAST

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To determine the association among yield related traits on grain yield of mutant wheat, an experiment was conducted at the Agricultural Research Farm of R. B. S. College, Bichpuri, Agra (Uttar Pradesh). The application of physical mutagens such as X-rays, gamma rays, and neutrons, as well as chemical mutagens, for inducing variation is well set up. Induced mutations have been applied to the Joint offer of FAO/IAEA Division of Nuclear Methods in Agriculture, more than 1800 cultivars acquired either as direct mutants or derived from their crosses have been released globally in 50 countries. The correlation of twelve characters in wheat induced mutants was investigated. The number of spikelets per spike and spike length both had a significant and positive correlation with yield per plant. Selection for traits that are positively correlated with yield per plant could lead to increased yield. This suggests that selecting for these traits may be more effective in maximising grain yield.

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Section: Resultssupporting

confidence: 91%

Character Association in M4 Micro Mutants in Wheat (Triticum aestivum L.)

Rohit

Singh²,

Negi³

2022

CJAST

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“…The yield-related traits (GNE, TGW) showed positive correlation with GY under both treatments. These results were like those, Khan et al (2005);El-Feki et al (2018); Kumar et al (2018); Wang et al (2018), who reported strong positive correlation between the traits.…”

Section: Phenotypic Results Correlation Analysissupporting

confidence: 89%

“…In agreement with the result Kumar et al (2018) and El-Feki et al (2018) reported positive correlation between the two traits. On the other hand, Khan et al (2005) reported negative correlation. The yield-related traits (GNE, TGW) showed positive correlation with GY under both treatments.…”

Section: Phenotypic Results Correlation Analysismentioning

confidence: 91%

Detection of drought tolerance-related QTL in the Plainsman V./Cappelle Desprez doubled haploid wheat population

Nagy

Szabó-Hevér

Lehoczki-Krsjak

et al. 2021

CEREAL RESEARCH COMMUNICATIONS

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Drought stress is one of the major abiotic factors that significantly reduces wheat grain yield. Improving drought tolerance is a challenge that plant breeders are facing nowadays. In this study, our goal was to identify quantitative trait loci (QTL) in the Plainsman V./Cappelle Desprez doubled haploid (DH) population under drought induced as decreased irrigation (ds) and well-watered (ww) conditions in glasshouse. In total, 54 QTL were detected across the three years in two water regimes linked to 10 drought tolerance-related agronomic traits. Out of the detected QTL regions several have been previously reported. The QTL on chromosome 1A (wPt-744613-wPt-8016) related to thousand grain weight was detected in both ds and ww conditions, explaining the 12.7–17.4% of the phenotypic variance. QTL for grain yield was detected on chromosomes 1A, and 6B in the ds treatment. Numerous QTL was identified under both irrigation levels.

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“…Therefore the selection of such genotypes is useful in breeding for heat tolerance. A significant and positive correlation was observed for chlorophyll content at anthesis with days to heading, days to anthesis and plant height [34][35][36]. The plot yield had non-significantly negative association with days to maturity [37,38].…”

Section: Resultsmentioning

confidence: 99%

Genetic Variability, Heritability and Correlation Study of Physiological and Yield Traits in Relation to Heat Tolerance in Wheat (Triticum aestivum L.)

Bhanu¹,

Arun²,

Mishra³

2018

BJSTR

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Twenty genotypes of wheat were undertaken for assessment of direct selection parameters (variability, heritability, and genetic advance), indirect selection parameter (correlation) and their relation with heat tolerance. This investigation was carried out at the Agriculture Research Farm of Institute of Agriculture Sciences, Banaras Hindu University, Varanasi during the Rabi season of 2011-12 and 2012-13 in randomized block design with 3 replications. Observations were recorded on grain yield and its related traits, viz., days to heading, days to anthesis, days to maturity, grains per spike, 1000 grain weight. Besides these, chlorophyll content at heading and at anthesis stages as well as canopy temperature depression (CTD) from vegetative stage to dough stages were studied. All the traits like days to heading, days to anthesis, days to maturity and 1000 grain weight exhibited high heritability, which was coupled with high genetic advance as per cent of mean was recorded for 1000 grain weight and yield per plot. That indicated effectiveness of selection for the improvement of these traits.The 1000 grain weight, i.e., test weight, as the most important yield attribute was found positively and significantly associated with CTD at early and late milking stages suggesting that higher seed weight is possible in varieties which show high CTD, i.e., low canopy temperature in heat stress conditions. Among the component traits, days to heading had positive and significant correlation with days to anthesis, and days to maturity. Interestingly, this result suggests that for the selection of early heading genotypes, days to anthesis and days to maturity should be invariably considered for wheat improvement. Further, plot yield had non-significantly negative association with days to maturity indicating that the early genotypes in semi-arid condition are capable of escaping the terminal heat stress, which is the major yield reducing factor. The twenty genotypes studied, represented considerable and diverse variability for different traits evaluated and significant associations on yield which could be utilized in breeding programme for varietal improvement in wheat.

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Inter-relationship and Path Coefficient Analysis for Biometric Traits in Drought Tolerant Wheat (Triticum aestivum L.)

Cited by 19 publications

References 4 publications

Character Association in M4 Micro Mutants in Wheat (Triticum aestivum L.)

Character Association in M4 Micro Mutants in Wheat (Triticum aestivum L.)

Detection of drought tolerance-related QTL in the Plainsman V./Cappelle Desprez doubled haploid wheat population

Genetic Variability, Heritability and Correlation Study of Physiological and Yield Traits in Relation to Heat Tolerance in Wheat (Triticum aestivum L.)

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