Evaluation of rice hybrids in saline soils of Pokkali
Keywords:
Hybrid rice, Salt tolerance, Pokkali, Rice Hybrid, SalinityAbstract
Field evaluation of rice hybrids in Pokkali tract was carried out during Kharif season of 2016-17, adopting a randomised block design. Days to fifty per cent flowering and maturity showed that all hybrids came to flowering early under saline conditions. Tall plants were observed in saline tolerant varieties Vyttila-6 and Ezhome-2 and short plants in IR-29. A high number of productive tillers was observed in CORH-3, while it was low in Sahyadri-2. Ezhome-2, IR-29 and Vyttila-6 had high number of spikelets per panicle. High seed setting percentage and long panicles were observed in Ezhome-2. Spikelet sterility was high in Sahyadri- 2 and low in Ezhome-2. High 1000 grain weight was observed in Ezhome-2, but it was low in IR-29. Based on visual scoring, Vyttila-6 was classified as highly tolerant and IR-29 as highly susceptible. Correlation studies indicated that grain yield per plant was positively correlated with productive tillers per plant and seed setting per cent, while it was found to be negatively correlated with sterility per cent. The hybrid CORH-3 was found to be moderately tolerant to salinity based on visual scoring and it produced the highest yield per plant indicating that this hybrid had high yield potential under saline condition and produced higher yield than saline tolerant traditional varieties.References
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