摘要
热带类玉米属大刍草(Zea mexicana)为短日植物,在我国北方长日地区不能正常开花结实。本研究初步分析通过系统选育方法选出的光不敏感型大刍草新品种"鲁牧2号",在长日照地区大田繁种和利用其进行杂交制种的可行性。结果表明,该品种能在长日地区(山东)正常开花结实,开花期在8月上中旬,10月上旬种子成熟。鲜草产量达45 930kg/hm2,种子产量达1 595.5kg/hm2,利用该品种作父本杂交制种试验成功率达72.7%。本研究结果说明该种质能够在长日照地区应用,对降低玉米(Z.mays)制种成本、丰富遗传育种资源具有重要意义。
Torrid Zone teosinte （Zea mexicana）is short-day plant, and does not bloom and produce seed in the long-day area of north China. An experiment was conducted in the long day area to estimate the repro- duction property and hybrid selection possibility of a new germplasm teosinte ‘ Lumu No. 2’ with photoperiod no-sensitivity, which was selected from nature variance plant by systematical breed. This study showed that the new germplasm was able to produce seeds in long-day area, and its florescence date was in early or medium August and the seed mature date was in early October. The fresh grass and seed yield was 45 930 kg/ha and 1 595.5 kg/ha, respectively. The successful rate of hybrid selection was 72.7% when ‘ Lumu No. 2＇ was used as father plant. This study suggested that the new germplasm could plant in longday area, which would amplify the germplasm of hybrid selection and reduce cost of corn seed production.
出处
《草业科学》
CAS
CSCD
北大核心
2011年第10期1835-1838,共4页
Pratacultural Science
基金
现代农业产业技术体系建设专项
公益性行业(农业)科研专项经费项目(nyhyzx07-022)
国家科技支撑计划(2009BADA7B01)
山东省农业良种工程牧草项目
关键词
光不敏感
大刍草
长日照地区
制种
产量
photoperiod no-sensitivity
teosinte
long day area
yield
