不同成熟度苦荬菜种子发芽特征比较  

Comparison of Germination Characteristics of Seeds with Different Maturity Degrees in Lactuca indica

作　　者：张靓 胡远彬[1] 季杨[1] 易军[2] 高丽 梁小玉[1] ZHANG Jing;HU Yuanbin;JI Yang;YI Jun;GAO Li;LIANG Xiaoyu(Sichuan Animal Science Academy,Chengdu 610066,China;Animal Breeding and Genetics Key Laboratory of Sichuan Province,Sichuan Animal Science Academy,Chengdu 610066,China;Bureau of Agriculture and Rural Affairs of Hejiang Prefecture,Hejiang Sichuan 646200,China)

机构地区：[1]四川省畜牧科学研究院,成都610066 [2]四川省畜牧科学研究院动物遗传育种四川省重点实验室,成都610066 [3]四川省合江县农业农村局,四川合江646200

出　　处：《耕作与栽培》2023年第1期12-17,共6页Tillage and Cultivation

基　　金：四川省“十四五”牧草育种攻关项目(2021 YFYZ 0013-4);四川省财政运行专项科研项目(SASA 2023 CZYX 003)。

摘　　要：为了确定苦荬菜种子最适的采种时间,以川畜1号苦荬菜种子为材料,研究不同成熟度苦荬菜种子在形态特征和发芽特性上的差异。结果表明,完熟期苦荬菜种子品质相对最好,幼苗长和幼苗鲜重最高,发芽率为87.75%。随着种子不断成熟,千粒重呈先增加后降低的趋势,但差异不显著;含水量、发芽率、发芽势逐渐降低,硬实率逐渐升高,且差异显著;种子活力指数呈下降趋势,同步指数呈上升趋势,但差异不显著。兼顾苦荬菜种子品质和方便生产采收操作,建议分批对达到完熟期的苦荬菜种子进行采收。To confirming the optimum stage for harvesting the seeds of Lactuca indica,different maturity degrees of seeds in Chuanxu No.1 L.indica were used as the experimental materials to compare the differences of the morphology and the germination characteristics.The seeds had the best quality at the mature stage with the longest seedling and the highest fresh weight,when the germination rate was 87.75%.As the seeds developed,thousand seed weight was increased and then decreased with no significant difference.Water content,germination rate and germination force gradually was reduced,while hard seed rate was increased.There was no significant difference in seed vigor and synchronous index.To ensure both the seed quality and the harvesting operation,the seeds of L.indica was suggested to be collected in batches when most of the seeds in the mature stage.

关 键 词：川畜1号 成熟度 种子品质 发芽特征 

分 类 号：S54[农业科学—作物学]