PISTILLATE FLOWER ABORTION IN SERR WALNUT ASSOCIATED WITH REDUCED CARBOHYDRATE AND NITROGEN CONCENTRATIONS IN WOOD AND XYLEM SAP

被引：12

作者：

DENG, X ^{[1
]}

WEINBAUM, SA ^{[1
]}

DEJONG, TM ^{[1
]}

MURAOKA, TT ^{[1
]}

机构：

[1] UNIV CALIF DAVIS, DEPT POMOL, DAVIS, CA 95616 USA

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE | 1991年 / 116卷 / 02期

关键词：

JUGLANS-REGIA; NITROGEN RESERVES; STARCH; FRUIT SET; FRUIT TREES; CARBON NITROGEN RELATIONSHIPS;

D O I：

10.21273/JASHS.116.2.291

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

Abortion of pistillate flowers (PFA) in a protandrous cultivar of walnut (Juglans regia L. cv. Serr) was increased by N deficiency. Starch and N concentrations in wood of 2-year-old twigs decreased to minimal levels during abortion of pistillate flowers. Nitrogen reserves in woody tissues were reduced by foliar N deficiency, as were concentrations of sugars and N in vacuum-extracted xylem sap. Abortive pistillate flowers ceased growth before spur leaves reached 50% of full expansion. PFA may result from transient deficiencies of C and N during the spring flush of growth. Depletion of storage C and N was accentuated before maturation of pistillate flowers in this cultivar by the metabolic demands of many catkins, spur growth, and leaf expansion.

引用

页码：291 / 296

页数：6

共 32 条

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