Hypergravity—an evolutionarily novel environment has been exploited to comprehend the response of living organisms including plants in the context of extra-terrestrial applications. Recently, researchers have shown that hypergravity induces desired phenotypic variability in seedlings. In the present study, we tested the utility of hypergravity as a novel tool in inducing reliable phenotype/s for potential terrestrial crop improvement applications. To investigate, bread wheat seeds (UAS-375 genotype) were subjected to hypergravity treatment (10×g for 12, and 24 h), and evaluated for seedling vigor and plant growth parameters in both laboratory and greenhouse conditions. It was also attempted to elucidate the associated biochemical and hormonal changes at different stages of vegetative growth. Resultant data revealed that hypergravity treatment (10×g for 12 h) significantly enhanced root length, root volume, and root biomass in response to hypergravity. The robust seedling growth phenotype may be attributed to increased alpha-amylase and TDH enzyme activities observed in seeds treated with hypergravity. Elevated total chlorophyll content and Rubisco (55 kDa) protein expression across different stages of vegetative growth in response to hypergravity may impart physiological benefits to wheat growth. Further, hypergravity elicited robust endogenous phytohormones dynamics in root signifying altered phenotype/s. Collectively, this study for the first time describes the utility of hypergravity as a novel tool in inducing reliable root phenotype that could be potentially exploited for improving wheat varieties for better water usage management.

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The field experiments were conducted at the Research Farm of AICW&BIP, Main Agricultural Research Station, University of Agricultural Sciences, Dharwad during rabi 2020-21 and 2021-22 and was laid out in Randomized Complete Block Design with 15 treatments replicated thrice to evaluate the performance of wheat quality to various nutrient management approaches. The pooled data onto two years indicated that application of 275:40.33:135.2 kg of N:P2O5:K2O ha-1 for yield target of 55 q ha-1 under SSNM practices significantly increased the protein content  (13.43 %), wet gluten (34.7 %), dry gluten (11.9 %), gluten index (81.6 %), sedimentation value (46.3 ml) and yellow pigment (5.93 ppm) in wheat grain and it was found on par with yield targets at 50 and 45 q ha-1 under SSNM.

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