Polysomaty analysis in diploid and tetraploid Portulaca grandiflora

被引：68

作者：

Mishiba, K ^{[1
]}

Mii, M ^{[1
]}

机构：

[1] Chiba Univ, Fac Hort, Plant Cell Technol Lab, Matsudo, Chiba 2718510, Japan

来源：

PLANT SCIENCE | 2000年 / 156卷 / 02期

关键词：

Portulaca grandiflora Hook; polysomaty; succulent plant; tetraploid; floral organ; flow cytometry;

D O I：

10.1016/S0168-9452(00)00257-0

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Polysomaty analysis of the succulent portulaca (Portulaca grandiflora Hook.) plant was carried out using flow cytometry. For both diploid and tetraploid plants, mature leaf tissue was found to have a higher level of polysomaty than young leaf tissue. Mesophyll (MP), bundle sheath (BSP) and water storage protoplasts (WSP) were isolated from leaf tissues of diploid portulaca plants. WSP had a higher degree of endopolyploidization than MP and BSP. The ploidy distribution was also variable in different floral organs. Tetraploid plants artificially induced by colchicine treatment showed a decline in the degree of polysomaty compared to diploid plants. Tetraploid plants had more spherical leaves, a larger number of petals and lower pollen fertility than diploid plants. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.

引用

页码：213 / 219

页数：7

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