Evaluation of the osmotic adjustment response within the genus Beta.

M. Bagatta, D. Pacifico, G. Mandolino
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引用次数: 27

Abstract

Beta genus includes both industrial and horticultural species, and wild species and subspecies, which are possible reservoirs of agronomically important characters. Among the traits for which Beta has been recently studied, drought tolerance or avoidance is one of the most important. In this work, relative water content and the osmotic potential in well-watered and stressed conditions of three beet types, one B. vulgaris subspecies and one species other than B. vulgaris, all belonging to the Beta genus, were analysed. In addition, relative water content, succulence index and osmotic potential were measured during a three-week water deprivation period, and the osmotic adjustment was estimated for each Beta accession. The results showed that succulence was higher for B. vulgaris ssp. maritima. It was also shown that all Beta accessions were capable of adjusting osmotically, but that the B. vulgaris maritima accession examined had a higher osmotic adjustment value compared to the accessions belonging to cultivated Beta types, and that the accession of the wild species Beta webbiana had a comparatively limited capacity to adjust osmotically.
β属内渗透调节反应的评价。
贝塔属包括工业种和园艺种,野生种和亚种,它们可能是重要农艺学性状的储存库。在最近研究的Beta性状中,耐旱性或抗旱性是最重要的性状之一。本文分析了甜菜β属3种类型(1个普通甜菜亚种和1个非普通甜菜种)在水分充足和胁迫条件下的相对含水量和渗透势。此外,在3周的缺水期,测定了相对含水量、多肉指数和渗透势,并估计了每次β加入的渗透调节。结果表明,白杨的肉质含量较高。maritima。结果还表明,所有Beta材料都具有调节渗透的能力,但与栽培类型的Beta材料相比,普通海参的渗透调节值更高,而野生种webbiana的渗透调节能力相对有限。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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