Abnormal morphology of the embryo and seedling of Welwitschia mirabilis, and some observations on seed-associated fungi

被引：3

作者：

Whitaker, C. ^{[1
]}

Berjak, P. ^{[1
]}

Pammenter, N. W. ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Sch Biol & Conservat Sci, ZA-4041 Durban, South Africa

来源：

SOUTH AFRICAN JOURNAL OF BOTANY | 2008年 / 74卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

abnormal morphology; fungi; seedling; seeds; Welwitschia mirabilis;

D O I：

10.1016/j.sajb.2007.12.002

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Welwitschia mirabilis normally possesses only two true leaves, which emerge from deeply-set meristem in the crown of the plant. The leaves display continuous growth from the base, while the tips die off due to water loss caused by climatic factors and age. Extensive splitting of the leaves may occur, giving the appearance of many smaller leaves. Here we report on observations of abnormal seedling morphology, including twinning, lack of pigment, and supernumerary cotyledons. A note on fungal species associated with the seeds is also appended. (C) 2007 SAAB. Published by Elsevier B.V. All rights reserved.

引用

页码：338 / 340

页数：3

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