【作者】 郝楠； 王建华； 李月明； 毕文博； 马云祥； 叶雨盛； 王国宏； 孙楠； 王延波；

【Author】 HAO nan;WANG jianhua;LI yueming;BI wenbo;MA yunxiang;YE yusheng;WANG guohong;SUN nan;WANG yanbo;Maize Research Institute,Liaoning Academy of Agricultural Sciences;College of Agronomy and Biotechnology,China Agricultural University;

【机构】 辽宁省农业科学院玉米研究所； 中国农业大学农学与生物技术学院；

【摘要】 本试验以辽单588杂交种的亲本为试验材料,通过比较不同生态区域生产玉米杂交种子的农艺性状和活力水平,并通过气象因子研究不同生态区玉米种子品质的表现,进而确定影响玉米种子品质的主要生态因素及适宜杂交制种地区。结果表明:不同成熟期收获种子的籽粒含水量随收获期的推迟下降趋势为海南>甘肃>辽宁。脱水速率平均为:海南(1.31)>甘肃(0.69)>辽宁(0.53)。灌浆速率平均为:海南(1.00)>甘肃(0.55)>辽宁(0.37)。辽单588产地的活动积温与三个活力指标呈极显著正相关;有效积温与三个活力指标呈显著正相关;降雨量与标准发芽率和冷发芽值呈显著负相关,与人工加速老化值相关性不显著;日照时数与标准发芽率和人工加速老化值均达到显著正相关,与冷发芽值相关不显著。不同生态区生产的同一杂交组合的发芽指标差异较小,而活力指标差异明显。辽宁地区生产的辽单588在授粉后50天收获就可以得到活力较高的种子。在甘肃生产的种子在授粉后53天收获具有与较高活力。海南地区生产的种子在授粉后47天收获的耐贮性及抗冷性最好。更多还原

【Abstract】 In order to determine the impact factors of the main ecological factors of seed quality and suitable hybrid seed production areas,hybrid parents of Liaodan 588 were compared in the performance of physical quality and vitality levels as well as meteorological factors of different ecological regions.The results showed during the different seed maturity harvest delay,the kernel water content decreased with time as hainan >gansu>liaoning.The mean dehydration rate is Hainan(1.31) > gansu(0.69) > liaoning(0.53) and the mean filling rate is Hainan(1.0>gansu(0.55)liaoning(0.37).The three vigor index is positive correlation with the active accumulated temperature apparently in producing area of liaodan588;The effective accumulated temperature was positively correlated with the three vigor index;Rainfall was significantly negative correlation,with the standard germination and cold test,is not significant with the accelerated aging test.Sunshine time have significant positive correlation with standard germination rate and accelerated aging test,,is not significant with cold test.The germination index of the same cross have small differences in different ecological region,but vigor index difference is obvious.For optimum harvest of maize seed with high vigor,Suitable harvesting started from 50 days after pollination in Liaoning,and 53 days after pollination in gansu.the seed harvesting started from 47 days after pollination have the best storability and cold resistance更多还原