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红松雌球果发育对枝叶营养生长和生物量积累的影响

张建瑛,殷东生*     

  1. (黑龙江省林业科学研究所, 哈尔滨 150081)
  • 出版日期:2019-06-10 发布日期:2019-06-10

Effects of female cone development on the vegetative growth and biomass accumulation of shoots and needles of Pinus koraiensis.

ZHANG Jian-ying, YIN Dong-sheng*   

  1. (Forestry Research Institute of Heilongjiang Province, Harbin 150081, China).
  • Online:2019-06-10 Published:2019-06-10

摘要: 通过对红松生殖枝和营养枝当年的枝叶生长及生物量积累差异的分析,研究2年生雌球果发育对枝叶营养生长和生物量积累的影响。结果表明:2年生雌球果抑制了1年生雌球果的发育,生殖枝当年的营养生长比营养枝当年的营养生长旺盛;生殖枝当年的生长量(顶枝芽除外)与母枝的枝长和基径呈显著正相关(P<0.05),生殖枝当年的顶枝和侧枝生物量与母枝的枝生物量呈显著正相关(P<0.05);2年生雌球果数量与生殖枝当年的顶枝基径、侧枝长、侧枝基径、侧枝芽数量和侧枝数量呈显著正相关(P<0.05),2年生雌球果生物量与当年的顶枝和侧枝生物量及总生物量呈显著正相关(P<0.05),说明2年生雌球果的发育促进了生殖枝当年的营养生长和生物量积累;生殖枝当年的总生物量中分配给顶枝、侧枝、顶枝针叶、侧枝针叶的生物量比营养枝多,生殖枝中超过87%的当年生物量分配给2年生雌球果,仅有0.22%的比例分配给1年生雌球果;通径分析表明,2年生雌球果的生物量积累直接影响生殖枝母枝的生物量积累,对生殖枝和营养枝当年生物量积累没有直接影响,而生殖枝母枝的生物量直接影响生殖枝和营养枝当年的生物量积累。

关键词: UV-B辐射, 施硅, 水稻, 光合作用, 蒸腾作用

Abstract: To clarify the effects of 2-year-old female cone’s development on vegetative growth and biomass accumulation of shoots and leaves in Pinus koraiensis, the differences of shoot growth and biomass accumulation in the current year were analyzed with reproductive branches and vegetative branches. The results showed that the 2-year-old female cones inhibited the development of 1-yearold female cones. The vegetative growth of the reproductive branches in the current year was more vigorous than that of the vegetative branches. The vegetative growth of the reproductive branches (excluding the terminal buds) in the current year was positively correlated with the length and basal diameter of the parent shoots (P<0.05). The biomass of the terminal and lateral shoots of the reproductive branches in the current year was positively related with the biomass of the parent shoots (P<0.05). The number of 2-year-old female cones was significantly positively correlated with the basal diameter of terminal shoot, length of lateral shoot, diameter of lateral shoot, number of lateral shoot buds, and number of lateral shoot of the reproductive branches in the current year (P<0.05). The biomass of 2-year-old female cones was significantly positively correlated with the biomass of terminal shoots, the biomass of lateral shoots, and the biomass of total shoots in the current year (P<0.05). These results indicated that the development of 2-year-old female cones could promote vegetative growth and biomass accumulation in the current year’s growth of the reproductive branches. The terminal shoots and needles, the lateral shoots and needles of the reproductive branches were allocated more biomass in the current year than the vegetative branch. More than 87% of the biomass in the reproductive branches was allocated to 2-year-old female cones, while only 0.22% was allocated to 1-year-old female cones. The development of 2-year-old female cones directly affected the biomass accumulation of the parent shoots of the reproductive branches, while the biomass of the parent shoots of the reproductive branches directly affected the biomass accumulation of the reproductive branches and vegetative branches in the current year.

Key words: UV-B radiation, silicon supply, rice, photosynthesis, transpiration.