期刊文献+

初生根的形态解剖结构与春小麦抗旱性的关系初探 被引量:15

A Preliminary Study of the Relation Between the Drought Resistance of Different Spring Wheat Varieties and Anatomical Structure of Root
下载PDF
导出
摘要 生长在半干旱条件下的春小麦,如果其初生根数目较少或者种子根后生木质部的中央大导管的直径较小,就可以提高作物对有限水分吸收的抵抗力,从而提高作物群体的抗旱能力.这是其形态解剖结构对水分胁迫的一种适应.因此,初生根数目及根中木质部中央大导管的直径均可作为抗旱品种选育的参考指标.实验采用快速冷冻切片法对甘肃陇中地区5个春小麦品种的初生根进行形态解剖学分析,以此比较5个春小麦品种的相对抗旱性强弱. When spring wheat is growing under the semi arid condition, the smaller diameter of the main xylem vessel in the seminal axes or the less number of seminal axes can increase the resistance of the root to absorb the limited water in the soil, thus increasing the ability of crop population to resist the water stress. So, each of the two can be used as a kind of index for characterizing the drought resistance. By using the cryostat microtome, the anatomical structures of the seminal root of five spring wheat varieties from Longzhong region, Gansu have been investigated, and their abilities for drought resistance analyzed.
作者 王静 黄薇
出处 《兰州大学学报(自然科学版)》 CAS CSCD 北大核心 1998年第4期154-156,共3页 Journal of Lanzhou University(Natural Sciences)
基金 甘肃省科委科技攻关项目
关键词 春小麦 初生根 水分胁迫 抗旱性 形态解剖结构 spring wheat primal root xylem vessel water stress
  • 引文网络
  • 相关文献

参考文献2

二级参考文献5

共引文献143

同被引文献358

引证文献15

二级引证文献198

;
使用帮助 返回顶部