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有了关于棉花花粉收集贮藏保活备用的技术,即可大大便利在异时异地开花的各品种的杂交工作。这种技术是保存种质和减轻病虫害传播的手段,因育种所需植株在各地区间运输往往连带造成病虫害的传播。本文介绍阿肯色州费依特维尔设计的一种花粉保存技术,即在-192℃的温度条件下,将陆地棉、紫花苜蓿、大豆、玉米、燕麦、黑麦、高粱和小麦的花粉贮放在液态空气中。然后用四唑溴染色,在试管内发芽并进行授粉,以测定花粉的生命力。紫花苜蓿、大豆、棉
With the technology of cotton pollen collection, storage, preservation and spareness, the hybridization work of various varieties blooming in different places can be greatly facilitated. This technique is a means of conserving germplasm and mitigating the spread of pests and diseases, as the transport of the plants needed for breeding often leads to the spread of pests and diseases. This article describes a pollen preservation technique designed by Fayetteville, Arkansas, in which pollen of upland cotton, alfalfa, soybean, corn, oats, rye, sorghum, and wheat is stored In liquid air. Then stained with tetrazolium bromide, sprouted in a test tube and pollinated to determine pollen viability. Alfalfa, soybeans, cotton