Imbibition behavior and flooding tolerance of rapeseed seed (Brassica napus L.) with different testa color
Imbibition behavior and flooding tolerance of rapeseed seed (Brassica napus L.) with different testa color
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DOI：
10.1007/s10722-008-9318-x
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发表时间：
2008-04
影响因子：
2
通讯作者：
X. K. Zhang;J. Chen;L. Chen;H. Wang;J. Li
中科院分区：
文献类型：
--
作者：
X. K. Zhang;J. Chen;L. Chen;H. Wang;J. Li
以18个甘蓝型油菜品种为材料，研究了这些性状之间的相关性。具有不同种皮颜色的种质。结果表明，种子吸水量和耐淹性与种子颜色和种皮黑色素含量呈极显著相关。红籽和黑籽材料种皮黑色素含量高，吸水慢，渗漏少，耐水淹能力强。大多数黄籽油菜种皮黑色素含量较低，吸水快，渗漏率高，易受吸胀伤害，耐涝性较低。结果表明，黄籽品种比暗籽品种在雨天田间出苗较差，收获前发芽严重。部分黄籽材料表现出缓慢的吸胀行为和较高的耐淹性，表明这些材料可作为提高黄籽材料耐淹性和减轻吸胀伤害的遗传资源。型油菜
In this study, the correlations among these characters were investigated in 18 rapeseed (Brassica napusL.) accessions with different seed coat color. The results indicated that seed water uptake and flooding tolerance were significantly correlated with seed color and melanin pigment content of testa. The red or black-seeded accessions had higher melanin content in testa, showed slower water uptake and lower leakage and higher flooding tolerance. The majority of yellow-seeded rapeseed accessions which had low melanin pigments content in testa showed a rapid water uptake and higher leakage than the red or black-seeded, which led to imbibition damage and lower flooding tolerance. The results suggest that the yellow-seeded cultivars experienced poor field emergence and more serious pre-harvest sprouting in raining weather than the dark-seeded cultivars. Some yellow-seeded accessions showed a slow imbibition behavior and relative high flooding tolerance, indicated these accessions can be used as a genetic resource to improve the flooding tolerance and reduce imbibition damage for the yellow-seededB. napusL.