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选用野生大豆、栽培大豆按异黄酮含量不同(高、中、低)配制杂交组合,对33个组合进行杂种优势分析。结果表明:中亲优势为正向优势的组合为15个,占全部组合的45.5%。具有超高亲优势的组合为12个,其中高异黄硐含量母本组合5个,占全部正向超高亲优势的41.7%,说明高异黄酮亲本杂种优势明显。18个栽培与野生杂交组合中超高亲优势正向优势组合为11个,中亲优势正向优势组合为13个,说明栽培与野生杂交组合的杂种优势明显,但14个栽培×野生杂交组合F2优势降低,表现为自交衰退,因此获得高异黄酮的后代材料仍需进一步选择。
Selection of wild soybean, soybean cultivation is based on different content of isoflavones (high, medium, low) preparation of hybrid combinations, 33 combinations of heterosis analysis. The results showed that the combination of positive parental advantages was 15, accounting for 45.5% of the total. There were 12 combinations with super-high pro-dominance, of which 5 were combinations with high isoflavone content, accounting for 41.7% of all positive super-pro-dominance, indicating that the heterosis of high isoflavone parents was significant. Among the 18 cultivated and wild cross combinations, 11 positive heterosis superiority combinations and 13 positive dominant heterosis combinations were found, which indicated that heterosis of cultivated and wild hybrid combinations was obvious. However, 14 hybrids × wild cross combinations F2 The advantage is reduced, manifested as self-fertility decline, so further isoforms are needed to obtain offspring with high isoflavone content.