Wet season hybrid rice seed production in Nepal | S. N. Sah and Z. Xingian / S. N. Sah in Journal of Agriculture and Forestry University, Volume 2 (2018)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 2 (2018) . - 157-163 p. Title : Wet season hybrid rice seed production in Nepal | S. N. Sah and Z. Xingian Material Type: printed text Authors: S. N. Sah, Author ; Z. Xingian, Author Publication Date: 2018 Article on page: 157-163 p. Languages : English (eng) Keywords: Restorer line, CMS line, pollination, synchronization Abstract: Hybrid rice seed production trial was initiated first time in Nepal with an objective for producing F1 hybrid seed by private seed company- to supply hybrid rice seed in the local level. Restorer (R) and cytoplasmic male sterile (CMS). A parental lines of hybrid rice varieties (HJ G1, HJ G2, HJ G5 and HJ G10) were received by Karma Seed Company in collaboration with Hejia Seed Company, China, and hybrid rice seed production trials were carried out at Parsa, Chitwan in 2016 and at Pathariya, Jhapa in 2017 during wet season. R lines of HJ G2, HJ G5 and HJ G10 were seeded earlier on the same day on 26 June 2016 and their A lines were seeded latter on the basis of their flowering period while HJ G1 was seeded on four lots where R line of each lot was seeded three days earlier than A line in 2016. In 2017 only two varieties HJG5 and HJ G1 were seeded where R lines were seeded 15 days and three days earlier than their R lines, respectively. There was good synchronization in the first lot of HJ G1 in 2016 and in both varieties of HJ G1 and HJ G5 in 2017 after adjustment. However, the yield harvested was not so good due to cloudy, rainy and windy environment, particularly during pollination and fertilization period. Seed setting in HJ G5 (1761 kg ha-1) was better than HJ G1 (1032 kg ha-1) when good matching in flowering. Early June and very late seeding beyond July was not good for hybrid rice seed production due to rain likely to occur nearby shortening of growth duration and low temperature during heading, resulted in no synchronization in other varieties. Link for e-copy: https://afu.edu.np/sites/default/files/Wet_season_hybrid_rice_seed_production_in [...] [article] Wet season hybrid rice seed production in Nepal | S. N. Sah and Z. Xingian [printed text] / S. N. Sah, Author ; Z. Xingian, Author . - 2018 . - 157-163 p. Languages : English (eng) in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 157-163 p. Keywords: Restorer line, CMS line, pollination, synchronization Abstract: Hybrid rice seed production trial was initiated first time in Nepal with an objective for producing F1 hybrid seed by private seed company- to supply hybrid rice seed in the local level. Restorer (R) and cytoplasmic male sterile (CMS). A parental lines of hybrid rice varieties (HJ G1, HJ G2, HJ G5 and HJ G10) were received by Karma Seed Company in collaboration with Hejia Seed Company, China, and hybrid rice seed production trials were carried out at Parsa, Chitwan in 2016 and at Pathariya, Jhapa in 2017 during wet season. R lines of HJ G2, HJ G5 and HJ G10 were seeded earlier on the same day on 26 June 2016 and their A lines were seeded latter on the basis of their flowering period while HJ G1 was seeded on four lots where R line of each lot was seeded three days earlier than A line in 2016. In 2017 only two varieties HJG5 and HJ G1 were seeded where R lines were seeded 15 days and three days earlier than their R lines, respectively. There was good synchronization in the first lot of HJ G1 in 2016 and in both varieties of HJ G1 and HJ G5 in 2017 after adjustment. However, the yield harvested was not so good due to cloudy, rainy and windy environment, particularly during pollination and fertilization period. Seed setting in HJ G5 (1761 kg ha-1) was better than HJ G1 (1032 kg ha-1) when good matching in flowering. Early June and very late seeding beyond July was not good for hybrid rice seed production due to rain likely to occur nearby shortening of growth duration and low temperature during heading, resulted in no synchronization in other varieties. Link for e-copy: https://afu.edu.np/sites/default/files/Wet_season_hybrid_rice_seed_production_in [...]