Investigating the effect of different planting methods and different levels of hormone distribution on biological performance traits and harvest index of rice genotypes under salt stress in North Khuzestan.

Document Type : Research Paper

Authors

1 Postdoctoral researcher, Department of Plant Production and Genetic, College of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Iran.

2 Professor, Department of Plant Production and Genetic, College of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Iran.

10.22084/ppt.2024.24383.2046

Abstract

This study was performed by split-split plots using randomized complete block design with three replications in Khuzestan province with the aim of determining the best method of cultivation under the influence of growth hormones to identify the compatibility of different genotypes of in two years (2018 and 2019). Three planting methods (planting drying, planting seedlings, planting direct or common), 16 different levels of auxin and salicylic acid hormones in the form of seed priming and different leaf spray treatments with 1 and 2 liters per hectare and different spraying times in the tillering stages and the appearance of panicle on different rice genotypes were investigated. The combined analysis results showed that in addition to the interaction effect of planting method in hormone traits, there is a significant difference in the level of probability of one percent. The highest biological yield with an average of 16950.49 kg / ha in IR 81429-B-31 genotype in seedling cultivation method due to favorable growth conditions, by applying hormonal treatment with auxin and salicylic acid due to the complementarity of two growth hormones in the regulation Biochemical and morphological reactions of the plant, which the earlier the time of use of these hormones, the more compatible the effects in terms of time, and in the priming method due to the development of resistance and acceleration of growth. The highest harvest index with an average of 73.11% in IR 81025-B-347-3 genotype in arid cultivation method due to reduced biological yield, by applying hormonal treatment of 1 liter of salicylic acid in the tillering stage in order to reduce vegetative growth becuse no use of auxin was obtained. In general, Daniel cultivar had the highest grain yield with an average of 7178.50 kg / ha in seedling culture method with hormonal treatment of priming with auxin and salicylic acid.
 

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Articles in Press, Accepted Manuscript
Available Online from 17 July 2024

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