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农学学报 ›› 2016, Vol. 6 ›› Issue (2): 76-81.doi: 10.11923/j.issn.2095-4050.cjas15070007

• 林学 园艺 园林 食用菌 • 上一篇    下一篇

‘玉露香梨’僵芽发生与活性氧代谢的关系

杨 盛,郝国伟,张晓伟,白牡丹,李 凯,石美娟,程培红,郭黄萍,李六林   

  1. 山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农科院果树所,山西农业大学
  • 收稿日期:2015-07-16 修回日期:2015-09-16 接受日期:2015-10-23 出版日期:2016-02-18 发布日期:2016-02-18
  • 通讯作者: 郭黄萍 E-mail:ys20080808
  • 基金资助:
    国家现代农业产业技术体系建设专项资金项目“国家梨产业技术太谷综合试验站”(CARS-29-24);山西省基础研究项目“梨花芽分化过程中‘僵芽’发生机理的研究”(2014021030-1)

Effects of Reactive Oxygen Metabolism on Wizened Bud Development of‘Yulu Xiangli’Pear

  • Received:2015-07-16 Revised:2015-09-16 Accepted:2015-10-23 Online:2016-02-18 Published:2016-02-18

摘要: 为明确减缓营养生长对降低‘玉露香梨’僵芽发生的作用机制,以河北魏县正常发育的‘玉露香梨’短枝顶芽为对照,结合山西太谷的‘玉露香梨’短枝顶芽,研究花芽分化期不同‘玉露香梨’园活性氧代谢的变化规律。结果表明:魏县僵芽梨园新梢年生长长度和直径均极显著大于魏县正常梨园和太谷正常梨园,且枝条停长时间最晚;花芽形态分化期间,魏县正常梨园与太谷正常梨园‘玉露香梨’芽内的SOD、CAT和POD活性以及MDA含量表现出先升高后降低的趋势,而魏县僵芽梨园芽内的SOD和POD活性呈下降趋势,CAT活性和MDA含量则呈先升后降趋势;魏县僵芽梨园芽内SOD、CAT和POD活性整体显著低于魏县正常梨园、太谷正常梨园,MDA含量显著高于正常梨园。可见,营养生长过旺可能导致‘玉露香梨’僵芽的发生;同时,僵芽的发生与芽内SOD、CAT和POD活性密切相关。

关键词: 高品质, 高品质, 番茄, 技术, 品种, 产业链, 经济

Abstract: The aim of this study was to clarify the mechanism of slowing vegetative growth to reduce wizened bud occurring in‘Yulu Xiangli’pear. Experiments were conducted to investigate the relative reasons induced wizened bud and the change regularity of metabolism of active oxygen during flower bud differentiation using normal flower buds in short shoot from Weixian, Hebei and Taigu, Shanxi as control, wizened bud in Weixian as research material. The results showed that length and diameter of shoot growth in the wizened bud pear orchard were significantly longer than that in normal pear orchards and the time of shoot stopped growing was latest in the wizened bud pear orchard. In the period of flower bud differentiation, the content of SOD, CAT, POD and MDA in shoots in normal pear orchards increased at first and decreased subsequently. But in wizened bud pear orchard, the activity of SOD and POD showed a downtrend, the activity of CAT and content of MDA increased at first and decreased subsequently. Activity of SOD, CAT and POD in the wizened bud were significantly lower than that in normal bud, but the content of MDA was significantly higher. All of above indicated that excessive vegetative growth might lead to the occurrence of wizened bud, which was closely related to the activity of SOD, CAT and POD in buds.

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