摘要
为了研究蔗糖在杧果花芽分化进程各阶段中的含量及作用,对正在进行花芽分化的杧果剪口叶、附近韧皮部及芽的蔗糖含量进行检测。结果表明:剪口叶和附近韧皮部内蔗糖含量于短截当日最高,分别为43.16、45.89μg/g,剪口芽于3月2日达到最高(47.92μg/g);叶片、韧皮部和剪口芽分别于3月12日、3月7日和2月25日降至最低,分别为38.47、38.27、38.94μg/g;各检测部位平均含量分别为40.72、41.34、42.93μg/g。剪口叶、附近韧皮部和剪口芽内蔗糖未向此时的生长中心(花芽分化的剪口芽)输送,无明确的库-源流向性,表明杧果花芽分化与蔗糖相关性不强,或碳水化合物的物质运输主要形式不是蔗糖。剪口芽芽眼中心颜色于2月20日出现蜡黄迹象,25日向芽体四周扩散;3月2—7日,芽体逐渐膨大,蜡黄色加深、芽眼呈半透明状;3月7日后绿色逐渐增加,半透明状消失。
In order to research the contents and functions of sucrose in the course of mango differentiation,it was observed that after cutting back flowering branch of mango,the flower bud on the cutting place could still in differentiation,the author measured the sucrose content of leaves,phloem and buds on the cutting section.The results showed that：the cutting leaves and nearby phloem＇s highest content appeared on the same day of cutting back,separately were 43.16 and 45.89 μg/g,the buds＇ highest appeared on March 2nd（47.92 μg/g）;leaves,phloem and buds＇ lowest content separately appeared on March 12th,7th and February 25 th,were 38.47,38.27 and 38.94 μg/g;the average content of leaves,phloem and buds were 40.72,41.34 and 42.93 μg/g.It didn＇t have a transport phenomenon that the sucrose flowed from the cutting parts to the organic centre（the buds at the differentiation）,there was no clearly library-source relationship,and this indicated that sucrose didn＇t have strongly correlation with flower bud differentiation,or the carbohydrate mainly not transported as the form of sucrose.After cutting back,the center color of bud eye gradually presented wax yellow on Feb 20th,and spread around on the 25th ;during March 2nd to 7th,the buds gradually expanded,the color deepen,the buds eye presented translucent;after March 7 th it was gradually increased green,and the translucent disappeared.
出处
《中国农学通报》
CSCD
2013年第7期117-120,共4页
Chinese Agricultural Science Bulletin
基金
云南省基金资助项目"杧果花芽调控再花机理研究"(2007C0058M)
云南省教育厅科学研究基金资助项目"推迟杧果花期避开倒春寒危害研究"(2010Y338)
关键词
杧果
花芽分化
结果母枝
短截
蔗糖
mango
flower bud differentiation
fruiting branch
cutting back
sucrose
