论文部分内容阅读
随着棉花生产现代化的发展,棉花的育种目标,要求新选品种,在高产、早熟、提高纤维品质的基础上,改进棉籽品质,(油分、蛋白质和棉毒素),适应综合利用,同时具有高度的多抗性状,以适应降低生产成本和减少环境污染的需要。目前生产上种植的主要品种,在棉属分类上,都是从陆地棉种中,经过人工选择、杂交和培育而成的各类品种。由于遗传种质所限,不易选出具有多抗性能和综合性状的棉花新品种。近年来国内外研究,应用种间杂交把棉属内野生棉种的有利性状,特别是各种抗逆性和纤维品质持性(强度、细度等),转移
With the development of cotton production modernization, cotton breeding objectives, new varieties are required to improve cotton fiber quality (oil, protein and cotton toxins) on the basis of high yield, precocious, improve fiber quality, to adapt to comprehensive utilization, while having a high degree of Multi-resistance trait to adapt to reduce production costs and reduce the need for environmental pollution. At present, the main varieties cultivated in the production are all kinds of cultivars derived from cotton varieties of land, artificially selected, crossed and cultivated. Due to the limitations of genetic germplasm, it is not easy to choose new cotton varieties with multi-resistance and comprehensive traits. In recent years, research at home and abroad, the application of interspecific hybrid cotton genus to the advantages of wild cotton species, in particular, a variety of resistance and fiber quality persistence (strength, fineness, etc.), transfer