摘要
利用芒果花枝短截后剪口芽在当年春季还能再次进行花芽分化并开花结果的现象,于2009年2月15日,对正在开花的结果母枝进行短截,每隔5 d短截1次。研究花芽再次分化过程中剪口芽、叶片及附近韧皮部内植物激素脱落酸(ABA)含量的变化规律。结果表明:剪口芽、叶片内ABA含量在2月25日达到最高,分别为38262.09,53 223.52 ng/gFW,韧皮部于3月2日达到最高(28 222.12ng/gFW);3月7日,剪口芽、叶片和韧皮部内ABA含量降至最低,分别为9 246.25,23463.89,17865.34 ng/gFW。在整个花芽分化过程中,短截植株剪口芽、叶片及附近韧皮部平均含量分别为17170.83,33525.89,18528.08 ng/gFW;对照植株剪口芽、叶片及附近韧皮部于3月2日达到最高,分别为37764.10,32910.73,24419.30 ng/gFW,3月7日降至最低,分别为7367.98,21567.21,16 523.16 ng/gFW,平均含量分别为14 636.96,29 810.72,16 623.48 ng/gFW。
The phenomenon that floral buds in Mango could still differentiate even if the flower brands were headed back in the same year. The flowering of bearing basal shoot was headed back on February 15, 2009 and then 5 days were done as so that. Abseisic acid （ABA） contents in buds, leaves and phloem were detected during floral bud differentiation. The result showed that： ABA contents in buds and leaves reached the maximum （ 38 262. 09 and 53 223.52 ng/gFW, respectively） on February 25, while ABA content in phloem reached the peak （28 222. 12 ng/gFW） on March 2. ABA contents in buds, leaves and phloem decreased to the lowest （9 246. 25, 23 463.89 and 17 865.34 ng/gFW, respectively） on March 7. During floral bud differentiation, the average contents of buds, leaves and phlo- em were 17 170. 83, 33 525.89 and 18 528.08 ng/gFW, respectively. ABA contents in buds phloem and leaves of the control plant reached the maximum （ 37 764. 10, 32 910. 73 and 24 419. 30 ng/gFW, respectively） on March 2, and decreased to the lowest （7 367. 98, 21 567. 21 and 16 523. 16 ng/gFW, respectively） on March 7, the average contents were 14 636. 96, 29 810. 72 and 16 623.48 ng/gFW.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第3期434-436,共3页
Journal of Yunnan Agricultural University:Natural Science
基金
云南省基金资助项目(2007C058M)
关键词
芒果
花芽分化
结果枝短截
脱落酸
Mangifera indical L.
flower bud differentiation
head back fruit branches
abscisic acid （ABA）
