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姊妹种用于制种主要是做母本，以提高制种产量，降低种子成本。而父本姊妹种的利用研究少有报道。本文就Ｅ２８姊妹种用于父本制种的研究和实践进行了探讨。结果表明，姊妹种生长健壮，花粉量大，有利于制种结实。而突出的表现是组配的杂种一代可增产５％～１０％。
Sisters species used to make the main female parent is to increase seed production, reduce seed costs. The use of paternal siblings has rarely been reported. This article discusses the research and practice of the use of the E28 sibling for paternal seed production. The results showed that the sister species grow robust, large amount of pollen, is conducive to seed production strong. The prominence of performance is the hybrid generation can be increased by 5% to 10%.