【作者】 李月明； 郝楠； 马云祥； 毕文博； 孙楠； 王成； 王延波；

【Author】 LI Yue-Ming;HAO Nan;MA Yun-Xiang;BI Wen-Bo;SUN Nan;WANG Cheng;WANG Yan-Bo;Liaoning Provincial Academy of comby;

【机构】 辽宁省农业科学院玉米研究所；

【摘要】 播种深度是影响玉米种予萌发的重要因素,本研究以10份玉米杂交种及对应的19份父母本为材料,在播深5cm、10cm和15cm条件下进行出苗率、苗长、根长、中胚轴长、芽鞘长、苗重、根重和中胚轴重的相关分析,以及杂交种与其父母本出苗率的相关分析。结果表明,辽单588、辽单1211、辽单565和辽单575等4个玉米杂交种为耐深播品种,辽3313、辽6049、XL21、辽7950、辽3162、辽2386、PH6WC、辽8821和辽3258为耐深播玉米自交系。本研究实验结果显示,出苗能力具有一定的遗传相关性,但是父本母本哪一个是起主要遗传因素并不明显,需要进一步通过遗传研究揭示。在玉米杂交种和自交系中,中胚轴长和根长与田间出苗率均达到显著相关,说明中胚轴长和根长在玉米深播后对出苗起到关键性作用。更多还原

【Abstract】 Depth of sowing is an important factor affecting the germination of maize seeds.In this study we carried out the correlation analysis of seedling rateseedling length root length mesocotyl lengthsprout sheath seedling weight root weight mesocotyl weight and emergence rate at 5 cm 10 cm and 15 cm planting depth using10 maize hybrid lines and 19 inbred lines as materials.The results show that liaodan588 liaodan1211 liaodan565 liaodan575 are hybrids with deep-sowing tolerance and liao3313 liao6049 XL21 liao7950 liao3162 liao2386 PH6 WC liao8821 liao3258 are inbred with deep-sowing tolerance.The experimental researchresultsindicated that the emerging ability has genetic correlation but which one is the major genetic factors is not obvious which needs further research.In this study the results showed that the length and root and mesocotyl were significantly correlated with the seedling rate of which indicated that the embryo axis and root length played key roles for maize emergence at deep sowing.更多还原