Both female and paternal parents of the new variety of Luxing Chinese cabbage are self-seed from self-cross plants of imported variety with superior quality.

绿星青菜的父母本是利用国外引进的优良品种经多代自交选育的高代自交系。

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The affinity of self-incompatibility in the mustard family affects the purity of hybrid seed and the propagation coefficient of stock plant.

十字花科自交不亲和性的大小关系到杂交制种的纯度和原种的繁殖系数。

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The process of clamping and self-locking clip of seed-filling has been studied, and built a model on the seed-filling speed.

研究了夹持自锁取种机构的充种过程，建立了充种速度模型；

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It goes without saying that resources are limited in our recession-ravaged economies ... but disinvesting in seed corn is obviously self-defeating.

CNN: Nuclear fusion is the 'perfect energy source'

The PCOM was born in the late 1930s as a desperate act of self-defense by West Texas cotton farmers, who at the time could hardly give their seed away.

NPR: Texas Cotton: 'Farmer Profits at Every Step'