Abstract: Tianlongliangyou 140 was bred by Sichuan Xike Seed Co. Ltd, derived from the two-line sterile line Tianlong S and high biomass, high combining ability restorer line Tianlonghui 140. It was introduced to Henan province in 2015, and approved by Hubei Provincial Crop Variety Appraisal Committee in 2016. The breeding process, characteristics, cultivation techniques and seed production techniques were introduced in this paper.

Key words: hybrid rice, Tianlongliangyou 140, breeding, characteristic, cultivation technique, seed production technique

摘要： 天龙两优140是四川西科种业股份有限公司以自育两系不育系天龙S为母本，与高生物量、高配合力恢复系天龙恢140配组选育而成的新两系杂交中稻组合，2015年开始进入河南正式试验并引入豫南稻区试种、示范，2016年通过湖北省品种审定。本文主要介绍了其选育过程、特征特性、产量表现、栽培与制种技术要点。

关键词: 杂交水稻, 天龙两优140, 选育, 特征特性, 栽培技术, 制种技术