Genetic characterization and its association with grain yield in wheat (Triticum aestivum L) under drought stress

Kumar, Arun; Bharti, Baudh; Kumar, Jaydev; Bhatia, Dharminder; Singh, Gyanendra Pratap; Jaiswal, JP; Prasad, Rajendra

doi:10.25174/2582-2675/2020/96419

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…Verma et al (2019) observed comparable output with the number of ears per plant and biological yield per plant. Kumar et al (2020) found a positive relationship between the number of tillers per plant, spike length, test weight and the number of grains per spike and grain yield per plant.…”

Section: Resultsmentioning

confidence: 86%

Genetic studies on F3 population of bread wheat [Triticum aestivum L.] for yield and its components traits

2022

EJPB

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The F 3 population of 22 wheat genotypes for 14 traits was evaluated at Agriculture Research Farm, Lovely Professional University, Punjab, during rabi, 2020-21. ANOVA revealed highly significant variation among all the traits studied. According to GCV and PCV grain yield per plant, harvest index, ear weight, test-weight, the number of productive tillers per plant and the number of grains per ear were found to be high (>20). High heritability (>60) and GA% (>20) of mean were observed for grain yield per plant, biological yield per plant, test-weight, the number of ears per plant, the number of productive tillers per plant, the number of grains per ear, the number of spikelets per ear, ear weight, harvest index. The number of productive tillers per plant, biological yield per plant and harvest index exhibited a significant positive correlation and path direct with grain yield per plant. Thus, the above mentioned traits are additive genetic control and direct selection in wheat has good potential for improvement in grain yield.

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Section: Resultsmentioning

confidence: 86%

Genetic studies on F3 population of bread wheat [Triticum aestivum L.] for yield and its components traits

2022

EJPB

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“…Drought stress can be simply defined as a scarcity of water which leads to dramatic changes in morphological, biochemical, physiological, and molecular features of the plants (Sallam et al, 2019;Kumar et al, 2020). All of these changes significantly hamper plant growth and crop production.…”

Section: Abiotic Stresses and Its Significancementioning

confidence: 99%

Effect of abiotic stresses and mitigation strategy associated with their tolerance in wheat

Kumar¹,

Mahapatra

Chakroborty³

et al. 2021

Journal of Cereal Research

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Global warming influences environmental factors which directly and indirectly affects agricultural crop production by exposing to several new biotic and abiotic stresses. The abiotic stresses like heat, drought, moisture, salinity and pre harvest sprouting stresses are most common whose effect became more severe due to climate change. Globally wheat is the most widely cultivated and used crops due to its economic and social values. Its production and productivity are highly vulnerable to these abiotic stresses. The development of wheat varieties tolerant to these abiotic stresses is a very challenging assignment for wheat researchers. The conventional breeding program is being practiced for such objectives but it will not be sufficient to achieve the target production and more advanced research is needed for better understanding the mechanism of these stresses and how plants became more tolerant. The progress made in the understanding of these abiotic stress tolerances is due to advances in three main research areas: physiology, genetic, and breeding research. Identifying morphological traits, physiological and biochemical traits for précised phenotyping and associated genes contributing to particular stress tolerance is very important under mitigation strategy. Previous studies showed that some abiotic stress tolerance is controlled by a polygene and its genetic constitution will help to analyze the gene network(s) controlling stress tolerance. Furthermore, stress mitigation options particularly through the application of plant hormones, several agronomic interventions, genetic and biotechnological management strategy are convenient for improving plant performances under various abiotic stresses are also essential to stabilize the wheat productivity.

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“…Conventional rice cultivation through flooding is also a major contributor to methane emission from the anaerobic decomposition of soil organic matter (SOM) (Liu & Wu, 2004). Additionally, weed flora in the rice-wheat rotation has changed dramatically with weeds of numerous species dominating the cropping system causing yield losses of 6-56% in rice and 20-40% in wheat (Kumar et al, 2008;Nawaz et al, 2019;Rabbani et al, 2011).…”

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confidence: 99%

Brown manuring and sorghum allelopathy affects weeds, soil health, and paddy yield

et al. 2022

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This 5-yr study (2012)(2013)(2014)(2015)(2016)(2017) aimed to evaluate the effects of sesbania (Sesbania rostrata Bremek. & Oberm) brown manure (SBM) and sorghum [Sorghum bicolor (L.) Moench] in rice (Oryza sativa L.)-based rotations on weeds, soil properties, and rice yield. Four rice production systems were used: (a) wheat (Triticum aestivum L.)-rice (control), (b) wheat-rice + SBM, (c) wheat-sorghum-rice, and (d) wheat-sorghumrice + SBM. Compared with control, allelochemicals accumulated in the rhizospheric soil of all other cropping systems over time and were the highest in the sorghumbased rotations. Allelochemical accumulation in the soil reduced the densities and aboveground biomass of sedges and grassy and broad-leaved weeds. Weed suppression was more evident when SBM in rice was included in the postsorghum field vs. the control. The use of SBM also enhanced soil organic matter (SOM), soil microbial biomass nitrogen (SMBN), and soil microbial biomass carbon (SMBC), and reduced the soil bulk density compared with the control. There was an improvement in SOM by 6.82, 0.57, and 9.09%, SMBC by 3.92, 0.86, and 6.29%, and SMBN by 3.12, 0.97, and 4.43% with wheat-rice + SBM, wheat-sorghum-rice, and wheat-sorghum-rice + SBM rotation, respectively, compared with the control. The highest paddy yield was recorded in the wheat-sorghum-rice-SBM, which was attributed to improved weed suppression in this system vs. wheat-rice rotation. The improved paddy yield in SBM-based rotations was a direct outcome of better soil health and the built up of allelochemicals in the soil profile, which suppressed weeds and improved rice yield. INTRODUCTIONSouth Asian countries are considered the primary food bowl for rice (Oryza sativa L.) and wheat (Triticum aestivum L.

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Genetic characterization and its association with grain yield in wheat (Triticum aestivum L) under drought stress

Cited by 3 publications

References 10 publications

Genetic studies on F3 population of bread wheat [Triticum aestivum L.] for yield and its components traits

Genetic studies on F3 population of bread wheat [Triticum aestivum L.] for yield and its components traits

Effect of abiotic stresses and mitigation strategy associated with their tolerance in wheat

Brown manuring and sorghum allelopathy affects weeds, soil health, and paddy yield

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