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王磊

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供职机构:黑龙江省农业科学院更多>>
发文基金:教育部留学回国人员科研启动基金更多>>
相关领域:农业科学更多>>

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Agronomic Characters of Elymus dahuricus,Hordeum brevisubulatum and Their BC1F3
2009年
[ Objective] This study was to explore the inheritance of BC1 F3 to excellent characteristics of parents( Elymus dahuricus, Hordeum brevisubu/atum), heterosis and fertility restoration. E Methodl The agronomic characters such as growth period, growth rate, pollen fertility, fecundity, reproducibility and fresh grass output of Elymus dahudcus, Hordeum brevisubu/atum and BC1 F3 were comparatively studied. E Result l The growth dynamic of the BC1 F3 lined tended to like that of its parent Hordeum brevisubu/atum; although growing periods of various lines were different, they were close to that of Hordeurn brevisubulatum. There were differences in pollen fertility and seed setting, the pollen fertility rate of YF3-93 was higher than recurrent parent Hordeum brevisubulatum, its seed setting rate in open pollination was also higher. Some lines had low pollen fertility rate and seed setting rate, such as the pollen fertility rate of PF3-52. There were significant differences in the output among BC1 F3 lines, e.g. the heterosis (HP) of YF3-64, YF3-74 and YF3-83 were 75.53%, 75.12% and 66.16%, respectively; however, the yields of PF3- 52, PF3-15 and PF3-42 were lower than their parents. ~ Conclusion] This study provided reference for breeding new varieties of forage which is suitable to drought and saline environment.
李微微李造哲王磊
披碱草和野大麦及其杂种回交后代的农艺特性研究
2009年
[目的]探明BC1F3代对亲本(披碱草和野大麦)优良特性的继承情况、杂种优势及育性恢复情况。[方法]重点对披碱草和野大麦及其BC1F3代的农艺性状,包括生育期、生长速度、花粉育性、结实性、再生性和株丛鲜草产量等进行系统的比较研究。[结果]BC1F3代各株系的生长节律趋向于亲本野大麦,不同株系的生育天数有所不同,但都接近轮回亲本野大麦;BC1F3代不同株系花粉育性和结实性有较大差异,但回交后各株系的花粉育性和结实性都有一定程度的提高,YF3-93花粉育性已经超过亲本野大麦,自然结实率也较高。有的株系花粉育性和开放授粉结实率较低,如PF3-52。BC1F3代各株系产草量有较大变异,不同株系间存在明显的差异,如YF3-64、YF3-74和YF3-83的杂种优势分别为75.53%、75.12%和66.16%,而PF3-52、PF3-15、YF3-42产草量不及亲本。[结论]该研究为培育适合干旱、盐渍生境的牧草新品种提供了依据。
李微微李造哲王磊
关键词:披碱草野大麦回交后代农艺特性
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