贵草1号多花黑麦草籽粒的收获适期  

Study on Suitable Seed Harvest Time of Guicao 1

作　　者：龙忠富 莫本田 陈瑞祥 罗京焰[2] 张明均[2] 杨飞[2] 

机构地区：[1]贵州省草业研究所,贵州独山558200 [2]贵州牧草种籽繁殖场,贵州独山558203

出　　处：《贵州农业科学》2009年第2期112-113,共2页Guizhou Agricultural Sciences

基　　金：贵州省农业厅项目"高产优质多花黑麦草引种选育及推广应用"[黔农科字(2003)016];贵州省农业科学院专项资金"贵草1号多花黑麦草中试及产业化示范"[院ZX(2007)046]

摘　　要：2003—2005年对贵草1号多花黑麦草进行了开花至花后30d内的籽粒灌浆,脱落现象的研究。结果表明:贵草1号多花黑麦草千粒重和脱落率与花后天数的关系均符合Log1st1c理论曲线。单穗籽粒干物重最大值出现在花后18～24d,花后15～18d的种子已具有较高发芽率(64.3%～91.1%),与以后各期收获的种子间无显著差异,但以花后18～21d的种子发芽苗质较好。据此,独山地区贵草1号多花黑麦草种子的最佳收获期为花后18～21d。The condition of seed -filling and abscission of Guicao 1 was studied during 30 d after its flowering from 2003 to 2005. The results showed that the relationship between 1000-seed weight, abscission rate and days after flowering accords with the logistic theoretical curve, the maximum seed dry weight per ear is at 18-24 d after flowering, the seed germination rate during 15-18 d after flowering is up to 64. 3 %-91.1% and is no significant difference compared with that at 18-30 d after flowering. The optimum seed harvest time is at 18-21 d after flowering because of its quality seedlings germinated from seeds harvested at 18-21 d after flowering.

关 键 词：贵草1号 多花黑麦草 花后天数 籽粒 收获期 

分 类 号：S543.6[农业科学—作物学]