Effect of seedling age on growth and yield of fine rice cultivars under alternate wetting and drying system

文献类型： 外文期刊

第一作者： Virk, Ahmad Latif

作者： Virk, Ahmad Latif;Ahmad, Ashfaq;Khaliq, Tasneem;Haider, Fasih Ullah;Virk, Ahmad Latif;Ejaz, Irsa;Farooq, Muhammad Shahbaz;Rehmani, Muhammad Ishaq Asif

作者机构：

关键词： fine rice; kernel yield; phenology; rice transplanting; water productivity

期刊名称：JOURNAL OF PLANT NUTRITION （ 影响因子：1.707； 五年影响因子：1.645 ）

ISSN： 0190-4167

年卷期： 2020 年 44 卷 1 期

页码：

收录情况： SCI

摘要： Use of older age seedlings of rice often decreased the yield in transplanted rice systems. However, the response of rice seedlings at different ages in transplanting system under alternate wetting and drying (AWD) is not well documented. Therefore, this study was endeavored to identify the suitable seedling age of fine rice cultivars in transplanted rice systems under AWD. Four seedling age treatments (20, 25, 30, and 35 days), and three fine rice cultivars (Chenab, Punjab, Kissan basmati) were arranged under randomized complete block design (RCBD). Two years (2017-2018) of studies demonstrated that overall younger seedlings (20 days old) increased rice growth phase (days taken to reach physiological maturity) after transplantation with less mortality rate, and quantified with higher water productivity. Younger seedlings (20 days old) produced 14.69% and 13.36% longer panicle, 19.36% and 18% more filled grains panicle(-1)in both years (2017 and 2018) respectively as compared to the older seedlings (35 days old). Moreover, younger seedling (20 days) produced 22% and 22.92% kg ha(-1)more yield in comparison to (35 days) older seedling in both years, respectively. However, cultivars also had significant differences in growth and yield production, and Chenab basmati showed vigorous growth and produced higher yield than Punjab and Kissan basmati. Furthermore, agronomic traits such as, productive tillers, panicle length, number of branches, and filled grains in panicle significantly contributed for grain yield formation. Overall, our results revealed that younger seedlings of fine rice could be a better option to obtain optimum fine rice yield under AWD.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序