Reproductive and vegetative characteristics of pecan cultivars
Reproductive and vegetative characteristics of pecan cultivars
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山核桃品种的繁殖和营养特性
DOI：
10.21273/hortsci.32.6.1028
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
L. J. Grauke
中科院分区：
文献类型：
--
作者：
B. Wood;Morris W. Smith;R. Worley;P. Anderson;Tommy Thompson;L. J. Grauke
80个幼龄（15岁以下）山核桃品种雄蕊和雌蕊花成熟度分析K. Koch]树。这些模式表明，花期内的授粉和受花窗口可分为早、早、中、晚、晚4个花期，分别为雌雄同体（I型）和雌雄同体（II型）。因此，该系统提供了一个基于季节的30级I型和II型系统，以替代标准的2级I型和II型系统，从而提高了开花间隔的分辨率，并改进了选择品种的方法，以确保庭院和果园树木的异花授粉。芽、果仁成熟日期和秋叶落花日期的Scott-Knott聚类分析将品种划分为几类。
Staminate and pistillate flower maturity of 80 cultivars of young (<15 years old) pecan [Carya illinoinensis (Wangenh.) K. Koch] trees are presented. These patterns show that pollination and receptivity windows within the flowering season can be divided into very early, early, mid, late, and very late season protandrous (Type I) and protogynous (Type II) types. This system therefore provides a seasonally based 30-class Type I and Type II alternative to the standard two-class Type I and Type II system, thus offering enhanced resolution of flowering intervals and an improved means of selecting cultivars to ensure cross-pollination of yard and orchard trees. Scott-Knott cluster analysis of budbreak, nut ripening date, and date of autumn leaf drop segregated cultivars into one of several categories.