| 刘红红.龙眼开花习性和果实生长及落果动态比较研究[J].中国南方果树,2017,46(6): |
| 龙眼开花习性和果实生长及落果动态比较研究 |
| Comparison of Flowering Habit and Fruit Growth and Dropping Dynamic of Longan |
| 投稿时间：2016-11-15 修订日期：2017-01-05 |
| DOI： |
| 中文关键词: 龙眼 开花习性 果实生长 落果 |
| 英文关键词:longan flowering habit fruit growth fruit drop |
| 基金项目:现代农业产业技术体系建设（广西荔枝龙眼创新团队）项目（nycytxgxtd） |
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| 中文摘要: |
| 以早熟龙眼品种(桂冠早，暂定名)、中熟龙眼品种(石硖)、晚熟龙眼品种(桂明一号)为研究对象，观测并分析3个不同熟期龙眼品种开花习性和果实生长及落果规律，为早熟新品种桂冠早的审定工作及后期推广奠定基础。结果表明:桂冠早雌雄比为1：1.69，比石硖和桂明1号多两倍，且桂冠早雌雄花开放动态曲线表现出同步性,相遇期长达14天，而石硖和桂明1号雌雄花开放错开，石硖相遇期为12天，而桂明一号相遇期仅8天，树体不同方位雌雄开放规律性不强；果实发育第二阶段(假种皮发育期)桂冠早果实相对生长速率较快，生长周期仅77天；三个龙眼品种落果率均集中在花后前三周，桂冠早累积落果率达71.05%，且采前1个月日均至少有1个果实脱落；桂冠早和桂明1号果个较大与其库强和库活性较大有关;石硖属于高糖小果型，桂明1号属于低糖大果型，桂冠早属于高糖中果型。 |
| 英文摘要: |
| To lay the foundation for the validation work and the promotion of the early-maturing new longan variet (Dimocarpus longan Lour.cv.Guiguanzao)，the early-maturing variety (Guiguanzao，tentative name)，mid-maturing variety (Shixia)，and late-maturing variety (Guiming No.1) as the tested materials，observation and analysis of 3 different maturity varieties of longan in flowering habit and fruit gowth and dropping dynamic. Results shows that the ratio of male to female was 1:1.69 in Guiguanzao，twice more than that of Shixia and Guiming No.1，and the male and female open dynamic curves show synchronization，meeting time up to 14 days，while male and female flowers flowering of Shixia and Guiming No.1 staggered,，meet only 3 days. The regularity of male and female is not strong in different orientation of the tree. The second stage of fruit development (aril development period) Guiguanzao fruit relatively faster growth rate，the growth cycle is only 77 days. Three varieties of longan fruit were concentrated in the first three weeks after flowering，cumulative drop rate of Guiguanzao reached 71.05%，and one month before harvest，there are at least one fruit falling off. Guiguanzao and Guiming No.1 large fruit size are related to the sink strength and sink activity. Shixia is high sugar and small fruit type，Guiming No.1 is lower sugar and large fruit type，and guiguanzao is high sugar and middle fruit type. |
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