对70—2杂交系花丝生命力的测定

来源 :种子科技 | 被引量 : 0次 | 上传用户:kmyzkmyz
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
70—2是耐阴湿、抗干旱、植株高度中上、配合力较高的自交系。用70—2做母本制种时,若按照花丝抽出苞叶到花丝萎蔫都能受粉安排父母本的花期调差、果穗秃根特别是秃顶现象比较重。为了摸清70—2自交系花丝生命力的特性,准确掌握授粉时间,提高制种产量,笔者于1991年对70—2自交系花丝生命力进行了测定。 1 测定材料及方法 70-2 is tolerant to the dampness, drought resistance, plant height in the upper, with higher inbred lines. With 70-2 to do the mother of the seed, if in accordance with the filament extracted from the husk to the filament wilting can be arranged by the parents of the flowering period of the transfer, ear bald especially bald phenomenon heavier. In order to find out the characteristics of filament vitality of 70-2 inbred lines, to accurately grasp the pollination time and improve the seed production, the author measured the filament vitality of 70-2 inbred lines in 1991. 1 Determination of materials and methods
其他文献
This paper detects and characterizes the diverse roles played by bounded noise in chaotic phase synchronization (CPS) of weakly coupled nonlinear stochastic sys
The simulations of three-dimensional particle dynamics show that when irradiated by an ultrashort intense laser pulse, the deuterated methane cluster expands an
This paper studies the mean first passage time (or exit time, or escape time) over the non-fluctuating potential barrier for a system driven only by a dichotomo
This paper introduces a new four-dimensional (4D) hyperchaotic system, which has only two quadratic nonlinearity parameters but with a complex topological struc
This paper is involved with the adaptive control and synchronization problems for an uncertain new hyperchaotic Lorenz system. Based on the Lyapunov stability t
By introducing an auxiliary ordinary differential equation and solving it by the method of variable separation,abundant types of explicit and exact solutions fo