Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/13359
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | The efficiency of boron utilisation in canola |
Author: | Stangoulis, J. Brown, P. Bellaloui, N. Reid, R. Graham, R. |
Citation: | Functional Plant Biology: an international journal of plant function, 2001; 28(11):1109-1114 |
Publisher: | CSIRO Publishing |
Issue Date: | 2001 |
ISSN: | 1445-4408 0310-7841 |
Statement of Responsibility: | James C. R. Stangoulis, Patrick H. Brown, Nacer Bellaloui, Robert J. Reid and Robin D. Graham |
Abstract: | Boron (B) deficiency is a common abiotic stress in many countries and is known to reduce canola yields. Growing B-efficient canola cultivars on deficient soils can reduce the impact of this deficiency, but to date little is known of the mechanisms associated with the efficiency trait. This work investigated the factors underlying the observed genotypic variation in the ability of different cultivars of canola (Brassica napus L.) to grow under low B supply. Previous studies have identified the cultivars Huashuang-2 and Dunkeld as B-efficient and the cultivar Barossa as B-inefficient. It was found that in Huashuang-2, efficiency was not related to uptake of B to the shoots, possibly indicating efficiency in B utilisation. A correlation was established between B efficiency and the ratio of the B concentration in the younger relative to the older leaves. Comparison of the distribution of B in young and old leaves under deficient and adequate B conditions showed that when B was limited, the concentration of B in the older leaves decreased with plant age, whereas when sufficient B was supplied, the concentration in these leaves continued to increase with age. The loss of B from mature leaves under deficient conditions suggested retranslocation to other tissues. Experiments in which boric acid enriched with 10B was applied to mature leaves showed that in only one of the efficient cultivars, Huashuang-2, was B retranslocated to younger leaves. In the other two cultivars, the sink for the 10B exported from the older leaves was not identified. It was concluded that there exist multiple mechanisms for B efficiency in canola. |
Keywords: | boron Brassica napus L. canola efficiency phloem retranslocation |
Description: | This paper is now found on the webpage for the title "Functional Plant Biology" which continues "Australian Journal of Plant Physiology" Copyright © 2001 CSIRO |
DOI: | 10.1071/PP00164 |
Published version: | http://www.publish.csiro.au/nid/102/paper/PP00164.htm |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 2 |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.