Agnelo de Souza, C. Arias, M. F. Oliveira, B. Castiglioni
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引用次数: 3
Abstract
Boron deficiency is common in Brazilian soils specially under Savanna conditions. Sunflower crop is very demanding as to boron supply, showing low tolerance to its deficiency. This research was done to screen sunflower cultivars for high boron utilization efficiency based on relative plant reaction in complete (0.15 mg B L -1 ) and deficient (0.00625 mg B L -1 ) nutrient solution. Twenty-two cultivars were evaluated in three independent assays, according to a randomized complete block design with six replicates. Root growth, plant height, leaf length, fresh root weight, fresh canopy weight, and symptoms of boron deficiency were evaluated. A criteria of efficiency and responsiveness was established. The selection procedure was efficient for root and canopy fresh weights, plant height and root growth, and allowed the selection of superior sunflower genotypes such as the AS 238 and AS 243 cultivars.
硼缺乏在巴西土壤中很常见，特别是在热带草原条件下。向日葵作物对硼的要求很高，对缺硼的耐受性较低。以向日葵为研究对象，通过对全营养液(0.15 mg B L -1)和缺营养液(0.00625 mg B L -1)的相对植株反应，筛选硼利用效率高的向日葵品种。采用6个重复的随机完全区组设计，通过3个独立试验对22个品种进行评价。评估了根系生长、株高、叶长、鲜根重、鲜冠重和缺硼症状。制定了效率和反应能力的标准。该方法在根、冠层鲜重、株高和根系生长等方面均具有较好的选育效果，可选育出as238和as243等优良向日葵品种。
期刊介绍：
The CBAB – CROP BREEDING AND APPLIED BIOTECHNOLOGY (ISSN 1984-7033) – is the official quarterly journal of the Brazilian Society of Plant Breeding, abbreviated CROP BREED APPL BIOTECHNOL.
It publishes original scientific articles, which contribute to the scientific and technological development of plant breeding and agriculture. Articles should be to do with basic and applied research on improvement of perennial and annual plants, within the fields of genetics, conservation of germplasm, biotechnology, genomics, cytogenetics, experimental statistics, seeds, food quality, biotic and abiotic stress, and correlated areas. The article must be unpublished. Simultaneous submitting to another periodical is ruled out. Authors are held solely responsible for the opinions and ideas expressed, which do not necessarily reflect the view of the Editorial board. However, the Editorial board reserves the right to suggest or ask for any modifications required. The journal adopts the Ithenticate software for identification of plagiarism. Complete or partial reproduction of articles is permitted, provided the source is cited. All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY. All articles are published free of charge. This is an open access journal.
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