论文部分内容阅读
为满足育种上对恢复系选育的需要 ,我们对高粱穗进行了解剖 ,观察到穗分枝系统由 7个部分组成。该系统中二级分枝呈现等差数列 ,三级分枝呈现二阶等差数列 ,推断四级分枝呈现三阶等差数列 ,从而可以用数学式表达全穗的分枝数及分枝末端着生籽粒的位点数。还观察了穗的籽粒数。该系统由籽粒数数组组成 (各类粒数 1～ 6粒 )。从研究中看到中国高粱资源具有丰富的穗结构性状 ,例如多分枝 ,多穗轴轮节数 ,较多粒数等 ,这些在已育成的晋辐 1号、晋粱 5号及 40 0 3 ,6 5 4,LR9198等恢复系中均得到验证。穗结构的剖析 ,使性状在形态研究上达到最小单位。
To meet the breeding breeding needs of restorer lines, we dissected sorghum spikes and observed that the panicle branch system consists of seven parts. In this system, the second-level branch presents an arithmetic progression, the third-degree branch shows a second-order arithmetic progression, and the fourth-order branch is inferred to have a third-order arithmetic progression so that the whole branch number and branch can be expressed mathematically The number of loci at the end of raw grain. Also observed the number of spike grains. The system consists of an array of grains (all types of grains 1 to 6). From the study, we can see that the Chinese sorghum resources have abundant ear structure traits, such as multi-branching, multi-spike wheel number, more grain number, etc. These have been found in Jinfu 1, Jinliang 5 and 40 0 3 , 6 5 4, LR9198 and other restorers have been verified. Spike structure analysis, so that traits in morphology to achieve the smallest unit.