Long-shoot/short-shoot phenomenon in woody plants

被引:0
作者
Sosebee, RE [1 ]
机构
[1] Texas Tech Univ, Dept Range Wildlife & Fisheries Management, Lubbock, TX 79409 USA
来源
SHRUBLAND ECOSYSTEM GENETICS AND BIODIVERSITY: PROCEEDINGS | 2000年 / 21期
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D O I
暂无
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Shoot growth in shrubs is often overlooked as an important component of phenological development in woody plants. However, shoot growth dictates the pattern of growth of deciduous trees or shrubs, especially following defoliation or canopy damage. In general, woody shoots are divided into short- and long-shoots. Short-shoots, sometimes called "spurs," are reproductive shoots (in other words, spurs on an apple (Malus pumila) tree). The long-shoots, sometimes called "watersprouts," are vegetative shoots. From a management perspective, herbicidal control of shrubs (in other words, mesquite (Prosopis glandulosa)) with long-shoots is highly ineffective. All of the energy synthesized by the plant is translocated to the long-shoot and converted to structural materials; in other words, stem growth. Similarly, one could postulate that browsing during the long-shoot stage would not significantly impair shrub viability if the shrub was healthy and vigorous at the time of browsing. Likewise, pruning shrubs during long-shoot growth (in a lawn or garden) stimulates "wolf-like growth" of the shrub. In contrast, herbicidal control of shrubs during the short-shoot stage usually conveys a high degree of success. Likewise, pruning or defoliation during the short-shoot stage significantly reduces fruit production.
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页码:306 / 307
页数:2
相关论文
共 3 条
  • [1] BECK DL, 1975, J RANGE MANAGE, V28, P47
  • [2] Dahl B.E., 1995, WILDLAND PLANTS PHYS, V1st, P22
  • [3] DAHL BE, 1977, RANGE SCI SERIES, V4, P257