Induction of seed dormancy by foliar spray of growth inhibitors in rice (Oryza sativa L.)
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Date
2019
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International Journal of Chemical Studies
Abstract
A field experiment was conducted during Kharif season, 2017-2018 at the experimental field of Department of Crop Physiology, ANDUA&T, Ayodhya to study the effect of foliar spray of growth inhibitors by different concentration viz. Maleic Hydrazide (500ppm and 1000ppm) and Cycocel (500ppm and 1000ppm) along with untreated control to induce dormancy in rice (Oryza sativa L.). The experiment was laid out in randomized block design comprising nine treatments at two stages (viz. flowering stage and anthesis stage) in three replications. Observations had been studied in vivo on germination percentage, viability test and biochemical parameters viz. chlorophyll, starch, protein and α-amylase activity. Among all the concentrations, maximum chlorophyll content was recorded in MH@1000ppm was followed by cycocel@500ppm before anthesis stage, maximum protein and starch content was found in cycocel@500ppm before flowering stage but maximum inhibition of germination percentage and α-amylase activity was observed with cycocel@1000ppm before anthesis stage but cycocel @ 500ppm was found most appropriate before anthesis stage which was very much effective for safe induction of seed dormancy in rice because of its minimum viability loss. Loss in viability may be due to some toxic effect caused by high concentration of cycocel.
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