选择合适的水稻花培起始材料，选用适宜的培养基配方，对于水稻花培中愈伤组织诱导和分化至关重要。
It was important for callus induction and shoot differentiation to choose better starting materials and a suitable medium in rice anther culture.
本文从起始材料的筛选、选择压力、离体诱变技术、突变体鉴定等方面对近年来我国蔬菜抗性突变体离体筛选技术研究进展进行了综述。
The progress in technique of in vitro selection for resistant mutant such as choosing of cultured material, stress factors and mutagens were reviewed in this paper.
用天然氨基酸为起始材料， 合成了一种具有双酚羟基官能团的环肽，并以此环肽为联酚合成了主链包含酰胺键的可生物降解环氧树脂。
Starting from natural amino acid, diphenol having a phenolic hydroxyl group was synthesized. Using the diphenole as comonomer, a biodegradable epoxy resin in which contain amide group.
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