Strategy of multiple selection indices for discrimination of potential genotypes and associated traits for yield improvement in pearl millet [Pennisetum glaucum (L.) R.Br.]

Relevance. The article shows the contribution and significance of the indices of the selection traits in the formation of an increase in the yield of millet of the Rossiyanka variety in the competitive variety testing. The purpose of the study is to study the significance and share of the influence of the indices of the selection traits in the formation of highly pro ductive varieties of millet.Methodology. Scientific research was carried out on the basis of the laboratory of breeding and seed production of cereals and sorghum crops of the Volga Research Institute of the Russian Academy of Sciences. The object of the study is the data of the structural analysis of plants and the yield of millet seeds of the Rossiyanka seed variety (selection of the Volga NIISS) in comparison with the standard variety Saratovskoye 6 in the nursery of competitive variety testing for 2005–2021. The research was conducted in accordance with the Methodology of the State Commission for Variety Testing of Agricultural Crops. The evaluation of the selected features and the contribution of each of them to the formation of productivity was carried out by the method of multiple regression in the program «Statistics».Results. Long-term studies have shown that for the formation of a highly productive statistical model of millet sown in the conditions of the forest-steppe of the Samara region, the most significant indices of the selection features are: the number of grains in a panicle (from 103%, or 221 pcs. per productive plant) and the number of productive stems (at least 126%, or 176 pcs/m2). The contribution of these main predictors gives the variance of the yield increase in 6 cases out of 10.

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Plants’ Physio-Biochemical and Phyto-Hormonal Responses to Alleviate the Adverse Effects of Drought Stress: A Comprehensive Review

Wahab

Abdi

Saleem

et al. 2022

Plants

208

103

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Water, a necessary component of cell protoplasm, plays an essential role in supporting life on Earth; nevertheless, extreme changes in climatic conditions limit water availability, causing numerous issues, such as the current water-scarce regimes in many regions of the biome. This review aims to collect data from various published studies in the literature to understand and critically analyze plants’ morphological, growth, yield, and physio-biochemical responses to drought stress and their potential to modulate and nullify the damaging effects of drought stress via activating natural physiological and biochemical mechanisms. In addition, the review described current breakthroughs in understanding how plant hormones influence drought stress responses and phytohormonal interaction through signaling under water stress regimes. The information for this review was systematically gathered from different global search engines and the scientific literature databases Science Direct, including Google Scholar, Web of Science, related studies, published books, and articles. Drought stress is a significant obstacle to meeting food demand for the world’s constantly growing population. Plants cope with stress regimes through changes to cellular osmotic potential, water potential, and activation of natural defense systems in the form of antioxidant enzymes and accumulation of osmolytes including proteins, proline, glycine betaine, phenolic compounds, and soluble sugars. Phytohormones modulate developmental processes and signaling networks, which aid in acclimating plants to biotic and abiotic challenges and, consequently, their survival. Significant progress has been made for jasmonates, salicylic acid, and ethylene in identifying important components and understanding their roles in plant responses to abiotic stress. Other plant hormones, such as abscisic acid, auxin, gibberellic acid, brassinosteroids, and peptide hormones, have been linked to plant defense signaling pathways in various ways.

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Strategy of multiple selection indices for discrimination of potential genotypes and associated traits for yield improvement in pearl millet [Pennisetum glaucum (L.) R.Br.]

Cited by 3 publications

References 20 publications

Drought Stress in Crop Plants and Its Management

Drought Stress in Crop Plants and Its Management

Contribution and significance of the indices of the selection features in the formation of an increase in the yield of seed millet

Plants’ Physio-Biochemical and Phyto-Hormonal Responses to Alleviate the Adverse Effects of Drought Stress: A Comprehensive Review

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