Title: Evaluation of the new line (HM5-250-E-1-1) derived from Hashemi cultivar of rice (Oryza sativa L.) in the farmer’s field of Guilan Province
Author: Aliakbar Ebadi
Abstract: The promising rice line (HM8-250-5E-1-1) tolerance to drought stress and Hashemi as a local rice variety was planted in the field of pioneer farmers in four locations (including Langroud (Geldefid), Rasht (Lashtenesha), Fouman (Gasht), and Talesh(Lisar)) in Guilan province. Evaluation of some agronomic characters for the two rice genotypes in these four different locations showed that promising line had a high grain yield (6800 kg/ha) in Rasht and low grain yield (4800 kg/ha) in Langroud. The new line had a higher grain yield (5880 kg/ha, averagely) than the Hashemi cultivar (4112 kg/ha) in the four locations. The promising line had an average number of panicles between 24-32 compared with Hashemi which had between 18-29 panicles. The new line showed higher grain numbers per panicle (128) than Hashemi (100) cultivar. The new line was approximately 20-25 cm shorter than Hashemi in all locations The growth duration from seeding to full ripening stage for the new line was 117-120 days and for Hashemi was 114-116 days. The head rice percentage of new rice (55%-59%) was better than from Hashemi cultivar (50%-57%) in all locations. The promising line was Semi-resistant to Blast disease in all locations. Almost all farmers and experts in this study consented to the new line to be introduced as a new rice cultivar in Giulan province.
Keywords: promising line, mutation, Hashemi
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