【作者】 葛国科；

【导师】 彭懿紫；

【作者基本信息】 广西大学 ， 作物遗传育种， 2003， 硕士

【摘要】 为了更好的在广西开展高油玉米的育种工作，为广西发展高油玉米生产提供理论依据，本试验分别于2001年、2002年对区外引进的10个高油玉米杂交种进行了试种和观察，研究了它们的生态适应性、栽培措施与籽粒含油率的关系等问题。结果如下： 1、引进的高油玉米杂交种在我区桂南均有较好的生态适应性，农艺性状、经济性状表现较好，适合我区桂南大部分地区种植。但高油玉米引入我区种植后，由于受到南方高温气候等因素的影响，籽粒的含油率有所下降； 2、同一杂交种(品种)内高油玉米籽粒的含油率和百粒重呈负相关关系； 3、栽培措施对高油玉米籽粒的含油率和百粒重的影响如下： 1)、施肥量与籽粒含油率呈不显著的负相关关系，与百粒重呈正相关关系；种植密度与籽粒含油率呈“近抛物线”变化：种植密度在一定范围内，与籽粒的含油率呈正相关关系，当种植密度超过一定值时，两者则呈负相关关系；种植密度与百粒重呈负相关关系； 2)、随着播种期的推迟，籽粒的含油率和百粒重均有不同程度的下降，因而在种植高油玉米时，要适宜的早播； 3)、多施微生物复合肥有利于提高高油玉米籽粒的含油率和百粒 广凸上会砸士含佑他式．元油击来的哇态违鱼忙及舍油持件的研究重； 总的来说，栽培措施对高油玉米含油率的影响并不显著，要提高高油玉米的含油率，必须通过育种途径，选育含油率高／性状表现好白品种。 4、玉米的油份有花粉直感效应的作用。高油玉米的花粉授子普通玉米后，可提高普通玉米籽粒的含油率；普通玉米的花粉授予高油玉米后，高油玉米籽粒的含油率有所下降。更多还原

【Abstract】 The Experiment studies on questions of the adaptability and association of kernel oil content with the cultivation tecnology of high oil corn and so on, through exper-planted and observed of 10 high oil corn hybrids which we had introductioned from other provices in years of 2001 and 2002, so that we can carry out the work of high oil corn breeding and provide the theory of produce high oil corn in GuangXi.The following subject areas are consideved:1 .All the hybreds of high oil corn which we had introduced had good adaptability in GuangXi. They can be planted in part of south-GuangXi, and all had good agronomy characters and economy characters. Because of the high temperature climate and others factions of the south-GuangXi, The kernel oil content becamed lower after they had planted in GuangXi;2.The relation of the kernel oil content with the weight of 100-kernel was no-significant negation correlation in the same hybrids;3.The relations of the kernel oil content and the weight of 100-kernel with the cultiveation technology were as following:l).The amount of manure and the kernel oil content was no-significant negative correlation, the amount of manure and the weight of 100-kernel was positive correlation. The change of kernel oil content showed as "near parabola"under different plant density: in certain value of plant density, they were positive correlation, after exceed the value of plant density they were negative correlation; The weight of 100-kerneland the plant density was positive correlation;2).The kernel oil content and the weight of 100-kernel would be descended if the date of sowing was delayed, so it should be sowed in proper time when plant high oil corn;3).It would be helped to increase the kernel oil’ content and the weight of 100-kernel if we fertilized more biological-manure to the high oil corn;But through the experment we considered that the increase of the kernel oil content and the weight of 100-kwenwl were not significant through the cultivation technology. So we should breed the varieties which have high oil content and good characters, that we can increase the kernel oil content of maize.4.The maize had the effect of heterosis xenian. It could increase the normal-corn’ kernel oil content if it was pollinated with the pollen of high oil corn; and the high oil corn’ kernel oil content would be descened if it was pollinated with the pollen of normal-corn.更多还原