Plant Bio-regulators for Enhancing Grain Yield and Quality of Legumes: A Review

Abstract

Plant bio-regulators (PBRs) are hormone-like natural or synthetic compounds that are able to increase the yields, alter growth patterns, nutritional qualities and provide resistance to various kinds of stresses (cold, heat, drought, insect, diseases, salinity) when applied at very low concentration to the plants. PBRs are known to enhance source-sink relationship and help in stimulating the photosyntheates thereby reduce flower drop, helps in fruit and seed development in better way ultimately improving the yield of the crops. Nowadays, abiotic stresses are major factors limiting crop productivity and sustainability throughout the globe. Bio-regulators application on crops induces long-term thermo tolerance (heat and cold) in plants as these can modulate plant responses to stresses at the cellular, tissue or organ level and hence are able to enhance the yield, quality and nutritional aspects of the food and forage legumes in the changing climatic scenario. Application of bio-regulators on crops is farmer friendly, convenient and effective approach for improving the productivity and quality of legume crops. The influence of some of the important plant bioregulators on growth, yield, quality and stress management in important food and forage legume crops are reviewed in this article.

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

“…Gibberellins (GAs) deficient symptoms look phenotypically like drought stress symptoms [211]. Under prolonged drought stress, plants show reduced height, leaf development, and flowering/fruit development [212].…”

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“…If it was possible to pass three passages in the cells of the first line successfully, it was not possible to isolate the virus from the second line. Instead, N. Kumar et al (2021) describe a successful method for isolating a new strain of nodular dermatitis virus from the Vero line. According to the phylogenetic analysis, the identified strain was a close homolog of LSDV Kenya, like in the current experiment.…”

Effect of Ethephon Application on Seed Yield and Yield Components of Two Faba Bean (Vicia faba L.) Cultivars

“…So, low seed yield is one of the most problems for producers. Plant bio regulators are natural or synhetic compounds and they also have importance for increasing yield and quality of legume crops (Kumar, 2021). The studies relation to ethephon application on seed production of some crops are wide, but there are very limited studies for using growth retard in legumes.…”