摘要
大豆不耐阴品种的性状变异大于耐阴品种 ,茎叶性状中 ,叶形指数的变异最小、柄角的变异最大 ,表明叶形性状较稳定、柄角性状易受环境影响。对照单作 ,大豆间作后 ,节长增加、节径和柄茎变细 ,比叶鲜、干重下降 ,两类型大豆有着基本一致的消长趋势 ,但在消长平准上 ,不耐阴品种比耐阴品种显著。柄角、柄长和叶片的长、宽及面积等五性状 ,在中、高节位上的叶层变化及差异 ,表现了不耐阴品种对弱光环境反应的敏感和耐阴品种的钝性。耐阴品种比不耐阴品种的叶片相对厚小、叶形狭长、叶柄短且与主茎夹角小、植株收敛、节短、主茎弹性好 ,抗倒 ,适于密植和间作。
Character variation of shade-non-enduring varieties were more evident than that of shade-enduring varieties. There were least variation of leaf shape index and high variation of angle between petiole and branch. As inclicated in the results of experiment, the leaf shape was more stable but the angle changed easily under the influence of environment. In comparison with that of monoculture,during intercropping of soybean, the internode length increased, the diameter of both internode and petiole reduced, the specific fresh leaf weight (F.W) and dry leaf weight (D.W) reduced. Shade-non-enduring varieties were more significant than shade-enduring varieties so far as the level of growth was concered. Angle of petiole, petiole length, leaf length and leaf width and area varied with leaf layer between 7th and 10th nodes of main stem. Shade-non-enduring varieties were more sensitive while shade-enduring varieties were dull on the reaction to weak light evironment. In contrast with shade-non-enduring varieties. Shade-enduring varieties perform the following peculiarties: smallery and ticker leaves, leaf shape longer and narrower. Shorter petiote with smaller petiole angle, more convergent plant type, shorter internode length and elastic main stem.
出处
《大豆科学》
CSCD
北大核心
2000年第1期35-41,共7页
Soybean Science
关键词
大豆
耐阴性
单作
间作
变异
茎叶性状
抗性育种
Soybean
Shade-endurance
Monoculture
Intercropping
Characters of stem and leaf variation
