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为提高杂交大豆不育系制种产量,以大豆细胞质雄性不育系JLCMS34A为母本,其同型保持系JLCMS34B为父本,于2011年和2012年在吉林省农业科学院洮南试验站进行制种试验。试验设3个密度(10,15,20万株/hm~2)和3个底肥施氮量(64,128,192 kg/hm~2),研究了9个处理对不育系结实率、制种产量及产量构成因素的影响。结果表明:密度对不育系结实率和制种产量影响均达到显著水平,密度10万株/hm~2的结实率最高,密度15万株/hm~2的制种产量最高,并且随着密度增加结实率逐渐降低。2011年密度与施氮量互作对结实率影响达到显著水平,以10万株/hm~2种植密度配合64 kg/hm~2底肥施氮量的结实率最高,为67.28%;密度与施氮量互作对制种产量影响差异不显著,种植密度为15万株/hm~2配合128 kg/hm~2底肥施氮量,最高制种产量达到1 395.72 kg/hm~2;底肥施氮量对不育系结实率和制种产量差异不显著,互作差异性也未达到显著水平。
In order to improve the yield of hybrid soybean CMS, JLCMS34A, a soybean cytoplasmic male sterile line, was used as the female parent and JLCMS34B, a homologous maintainer, was used as the male parent. The seeds were planted in Jiannan Experimental Station of Jilin Academy of Agricultural Sciences in 2011 and 2012 test. Three density (10, 15, 20 plants / hm ~ 2) and three basal fertilizer application rates of nitrogen (64,128,192 kg / hm ~ 2) were tested in the experiment. Seedling rate, The impact of yield components. The results showed that the density had a significant effect on the seed setting rate and seed yield of sterile line. The seed setting rate was the highest at the density of 100,000 lines / hm ~ 2 and the seed yield at the density of 150,000 lines / hm ~ 2 was the highest. Density increased seed setting rate gradually decreased. The effect of density and nitrogen application rate on seed setting rate reached a significant level in 2011. The seed setting rate was 67.28% with the planting density of 100000 plants / hm ~ 2 and the nitrogen application rate of 64 kg / hm ~ 2, There was no significant difference in seed yield between the two treatments. Planting density was 150 000 plants / hm -2 with 128 kg / hm -2 basal fertilizer application, and the highest seed production was 1 395.72 kg / hm -2. There was no significant difference in the seed setting rate and seed yield of sterile lines, nor did the differences in interaction play a significant role.