Accumulation of glucosinolate, oil, and erucic acid in developing Brassica seeds
Accumulation of glucosinolate, oil, and erucic acid in developing Brassica seeds
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DOI：
10.1016/s0926-6690(02)00058-4
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发表时间：
2003-01-01
影响因子：
5.9
通讯作者：
Hamama, AA
中科院分区：
文献类型：
--
作者：
Bhardwaj, HL;Hamama, AA
油菜籽中不含硫代葡萄糖苷的粕可用作牲畜饲料，而富含硫代葡萄糖苷的粕可用作杀虫剂。还表明，芸苔属（油菜籽）种子中的硫代葡萄糖苷含量可以通过施用化学品来控制。然而，尚未明确确定可以应用潜在化学处理的种子发育阶段。因此，进行实验以评估油菜品系的发育种子中硫代葡萄糖苷、油和芥酸的积累。这些包括被分类为低或高硫代葡萄糖苷含量的品系。在50%开花期标记8个油菜品系的小花，并在开花后26、28、30、33、35、37、40、42、44、47、49和52天（10天）依次收获。高硫代葡萄糖苷和低硫代葡萄糖苷品系的含油量从26升到52升增加了大约4倍。油分的积累不受硫甙含量的影响。在28和40 ℃时，低硫代葡萄糖苷品系的油中芥酸含量显著高于高硫代葡萄糖苷品系。发育中的种子在大约37 ℃时最容易受到芥酸含量变化的影响。高硫代葡萄糖甙系的硫代葡萄糖甙含量在26 ℃开始显著增加，并持续到33 ℃。然而，低硫代葡萄糖苷品系中的硫代葡萄糖苷含量仅从33增加到35。这表明油菜籽中硫代葡萄糖苷的最大积累可能发生在大约26 ℃。(C)2002 Elsevier Science B.V.保留所有权利。
The glucosinolate-free meal from rapeseed can be used as livestock feed, whereas glucosinolate-rich meal can be used as a pesticide. It has also been shown that glucosinolate content in Brassica (rapeseed) seeds can be manipulated by application of chemicals. However, the stage of seed development when potential chemical treatments could be applied has not been clearly identified. Thus, an experiment was conducted to evaluate accumulation of glucosinolate, oil, and erucic acid in developing seeds of rapeseed lines. These included lines that were classified as low or high for glucosinolate content. The florets of eight rapeseed lines were tagged at the 50% flowering stage and were sequentially harvested at 26, 28, 30, 33, 35, 37, 40, 42, 44, 47, 49, and 52 days after flowering (DAF). The oil content in both the high and low-glucosinolate lines increased approximately by a factor of four from 26 to 52 DAF. The oil content accumulation was not affected by glucosinolate content. Erucic acid content in the oil was significantly higher in low glucosinolate lines compared with high glucosinolate lines on 28 and 40 DAF. Developing seeds were most amenable to change in erucic acid content at approximately 37 DAF. The glucosinolate contents in high glucosinolate lines started to increase significantly at 26 DAF and continued up to 33 DAF. However, the glucosinolate content in the low glucosinolate lines increased only from 33 to 35 DAF. This indicates that the greatest accumulation of glucosinolate in developing rapeseed seeds may occur at approximately 26 DAF. (C) 2002 Elsevier Science B.V. All rights reserved.