Cotton "Dong a" Genic male sterile Germplasm
The cotton male sterile plant was found in the field in 1972, and the cotton "Dong A" genic male sterile germplasm was successfully cultivated after 3 years and 6 seasons. Its sterile traits are mainly controlled by a pair of recessive nuclear genes. It has the advantages of stable inheritance of sterility, easy transfer, strong combining ability, wide restorer line, about 50% sterile plant rate and 100% sterility per plant. It has the characteristics of high yield and wide adaptability. A derived male sterile line 1 was bred by using Dong A genic male sterile germplasm. Among them, 12 hybrids were selected from several derived male sterile lines. The seed production by two-line method has been studied successfully. And put forward a set of breeding with less gardener and low cost. Seed production techniques, using the derived male sterile lines of Dong A genic male sterile germplasm and the selected hybrids, have been applied to the production area steadily since the 1980s. the scope of application expanded from Sichuan to Hubei, Jiangsu, Shandong, Henan, Shaanxi and other provinces. By 1995, incomplete statistics had extended 610000 hectares, increased lint income by about 150kg per hectare, and created an additional output value of 962 million yuan. Cotton "Dong A" genic male sterile germplasm is unprecedented in similar research at home and abroad. "Dong A" genic male sterile germplasm was used to select derived male sterile lines, hybrids and its matching application techniques. It has been used in large-scale production in China for the first time, which has achieved great social and economic benefits, and opened up a new technical way for the utilization of cotton heterosis.
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The application of cotton "two changes" technology is progressing smoothly.
The technology of industrial seedling raising and mechanized transplanting of cotton (referred to as "two technologies" for short) has the characteristics of modern agriculture. it is not only an intensive and large-scale production technology, but also a resource-saving and environment-friendly technology. its core technology is substrate seedling raising and naked seedling transplanting, which passed the appraisal of the Ministry of Agriculture in 2004 (Ministry of Agriculture Achievement Registration No.: agricultural Science Guojian word [0056] No. 0056), ranking among the international leading level of similar research. It has obtained a number of national invention patents and realized the production and serialization of the technology. it entered the production demonstration last year and is now
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Cotton: grab the opportunity to make soil moisture early
Although there are still one or two months to go before cotton seedlings and sowing, the current situation of continuous drought in autumn, winter and spring has posed a great threat to cotton planting this year, and according to the situation in previous years, there is little precipitation in our province from March to April. In view of the current situation, Dong Hezhong, deputy director and researcher of the Cotton Research Center of the Shandong Academy of Agricultural Sciences, suggested that cotton farmers should start and prepare early for cotton planting this year, seize the opportunity to create soil moisture according to the weather conditions, actively create soil moisture and protect seedlings against drought, and strive for one sowing of the whole seedling and early development of strong seedlings. Select
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