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近二十年棉花育种工作进展很快,由一般有毒棉品种选育,发展到棉花无毒素品种选育,为棉花育种工作开辟了新途径。一、无毒棉育种的重要意义:目前生产应用的棉花品种,棉株各部分都含有棉子酚,它是一种有毒物质,称为“棉毒素”。凡种子无棉子酚的棉花品种称之无毒棉。棉毒素是黄色晶体物质,分子式为C_(30)H_(30)O_8,以游离和络合两种状态存在。棉株的含量在0.2—2.3%之间,棉仁饼中含棉毒素超过0.04%时,能使人畜轻度中毒;含量达0.15—0.2%时,则产生严重中毒。饲
Nearly 20 years of cotton breeding work progressed rapidly from the general breeding of virulent cotton varieties to the development of nontoxic cotton varieties breeding for cotton breeding has opened up a new way. First, the important significance of non-toxic cotton breeding: The current production and application of cotton varieties, cotton plants contain gossypol in all parts, it is a toxic substance, called “cotton toxin.” Cotton seed without any gossypol is called non-toxic cotton. Cotton toxin is a yellow crystalline substance, the molecular formula is C_ (30) H_ (30) O_8, exists in both free and complex state. Cotton plant content of 0.2-2.3%, cottonseed cake containing cotton toxins over 0.04%, can make mild poisoning of humans and animals; content of 0.15-0.2%, then the resulting severe poisoning. feed