辽宁农业科学Issue(3)：74-77,4.DOI:10.3969/j.issn.1002-1728.2024.03.017
辽宁稻区水稻新品系抗寒性鉴定
Identification of Cold Resistance of New Rice Lines in Liaoning Rice Region
摘要
Abstract
Cold damage is considered one of the important factors affecting rice production.In order to pro-mote the rapid transformation of scientific research achievements into practical productivity,improve the com-prehensive productivity of rice,increase the research on stress resistance of new varieties,especially cold re-sistance,screen cold resistance resources,and provide scientific basis for accelerating the promotion and ra-tional layout of high-quality varieties.This experiment used cold water irrigation method to identify the cold re-sistance of 81 japonica rice lines from Liaoning rice region.The results showed that after cold water treatment,The agronomic and yield traits of each strain are showing a downward trend.Among them,the plant height de-creased by 1.3～39 cm;Reduce ear length by 0.3～10.6 cm;Reduce the total number of grains per spike by 2～89 grains;The decrease in fruiting rate is 34.5%～96.6%;Normal and sturdy varieties reduce thousand grain weight by 0.9～16.9 g;Thedecrease in yield per mu is 47%～100%.Overall,BeijingG1,YJ 16,Bei-jingG 12,Liaoyou 86,BeijingG 6,Liaojing Xiang 3,Tiejing 2114,and KH12 have good cold resistance,with a yield reduction of 47%～55.7%,which belongs to the first level and provides important utilization value for cold tolerance breeding of japonica rice.关键词
粳稻/耐冷/产量Key words
Japonica rice/Cold tolerant/Yield分类
农业科技引用本文复制引用
李殿平..辽宁稻区水稻新品系抗寒性鉴定[J].辽宁农业科学,2024,(3):74-77,4.基金项目
辽宁省农业重大专项(2022JH1/10200003) （2022JH1/10200003）
