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两系杂交水稻由于具有优质高产的特性,近几年在全省各地发展较为迅速。六合区为江苏省丘陵地区杂交水稻优势区域,随着水稻优质产业提档升级,至2010年两系杂交水稻种植面积已占全区杂交稻种植面积的80%以上。 相似文献
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我国杂交水稻的形势与战略 总被引：3，自引：0，他引：3
我国杂交水稻从开始研究至今已有３０年历史，已为我国粮食生产作出了巨大贡献。要进一步发展杂交水稻，必须通过育种方法和材料的改进来提高组合的多样化、产量潜力、品质、抗性和制种产量。两系杂交稻正在走向成功，三系杂交稻在本世纪仍将是主力。杂交水稻国际开发前景可观。 相似文献
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【目的】最近十余年,是我国杂交稻优质化从修订审定指标引导到全面推进的重要时期,回顾这一时期我国优质杂交稻的选育与推广进程,对于完善和指导未来的水稻育种具有重要的意义。【方法】试验材料与数据来自2009－2020年我国杂交水稻主要品种的推广面积统计汇总、品种审定试验结果及品种系谱资料。分析了各主要稻区优质杂交稻品种的推广应用总体情况,梳理了主要优质杂交稻品种利用的不育系、恢复系及各系列品种推广面积,还回顾了各稻区主栽品种更替历程。【结果】这一时期,我国优质杂交稻品种推广面积持续快速增长,各主要稻区品种优质率显著提升,但高档优质稻品种仍然缺乏。优质杂交稻品种的亲本来源比较单一,集中于15个骨干不育系和9个恢复系。此外,分析结果还显示我国各主要稻区主栽优质杂交稻品种总体上进行了1~2次大规模更替。【结论】过去12年来,得益于水稻科研育种技术创新驱动,我国杂交稻优质化育种进程明显加快,各稻区优质杂交水稻品种不断涌现,推广面积快速增加,生产主推优质品种比重显著提升。 相似文献
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中国水稻杂种优势利用现状 总被引：46，自引：6，他引：46
分析了1996～1998年我国杂交水稻生产应用中主要品种的胞质类型及播种情况。现阶段,中国杂交水稻种植面积占水稻年播种面积的50％以上。生产上应用的三系杂交稻仍以野败胞质为主,其次为冈·D型和印尼水田谷型,后者的面积比重在逐年增加。两系杂交稻研究取得新突破,10余个组合通过了省级审定,培矮64S的广泛应用展示了两系杂交稻超三系杂交稻的诱人前景。我国业已育成超级杂交稻苗头组合,个别组合在部分百亩(6.67 hm2)连片示范点已经达到了日产稻谷100 kg/hm2的超级稻指标。 相似文献
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我国水稻杂种优势利用研究，相继取得籼、粳稻“三系”配套，至1976－1980年5年累计，全国种植杂交水稻面积达3亿5千多万亩，增产粮食130多亿公斤，平均每亩增产50公斤以上。杂交水稻的生产潜力与植株形态密切相关，为提高杂交水稻育种水平．尽快培育出生产潜力更大的杂交水稻新组合，总结本人多年育种经验，结合水稻形态学研究有关资料对杂交水稻高产形态进行探讨，望能对杂交水稻育种及栽培实践有所助益。1杂交稻根系发达，活力旺盛优良组合杂交水稻和常规水稻比较具有较为明显的根系生长优势。据营口县水稻三系育种组观察，杂交水稻黎化… 相似文献
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发展高品质棉是江苏省“十五”优质粮棉油五大主导产业之一，是提高棉花竞争力的一个重要举措。本文从生产实际的角度，对高品质高产栽培、加工、纺纱等技术方面进行了研究，并提出了切实可行的措施。 相似文献
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The present study focused on the quality traits of durum wheat grains (protein and content, gluten content, yellow pigment content), semolina (gluten index and yellow index) and pasta (firmness, yellow index, cooking time) obtained from 12 durum wheat genotypes grown under elevated atmospheric CO2 concentration in an open field Free Air CO2 Enrichment (FACE) experiment. The aims were to evaluate the impact of elevated CO2 on durum wheat pasta making related traits as well as investigate genetic differences existing in a panel of old and modern cultivars. The protein content showed a not significant decrease (7%), the GC decreased significantly (13.3%), while the GI showed an increasing significant tendency (14%). The overall pasta quality (firmness and weight) worsened in ELE. Correlation between all traits and pasta firmness demonstrated that the decrease in pasta firmness under ELE was correlated with GPC and GC while it was not with the GI. All varieties, although to different extent, showed lower pasta firmness values compared to the ambient condition. Among the varieties tested, some were more sensitive than others to the increased atmospheric CO2 concentration, a finding that can be exploited by breeding for designing novel genotypes with lower sensitivity to increased atmospheric CO2. 相似文献
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实施质量管理体系、测量管理体系,加强白砂糖产品包装质量的管理和控制,避免不必要的损失,促进企业经济效益的提高,使管理体系工作落到实处。 相似文献
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Edward C. Lulai 《American Journal of Potato Research》1983,60(6):441-448
Correlation was found between several methods which were used to evaluate the relative effectiveness of surfactants in potato flakes. Notably, Amylograph rate of rétrogradation and Amylograph temperature at peak viscosity correlated very well with the level of free starch (Blue Value Index). Overall, calcium and sodium stearoyl-2-lactylate did not perform well in complexing free starch to improve rheological properties unless accompanied by low alpha monoglycerides or distilled monoglycerides. 相似文献
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Bertram J. F. Hudson 《Plant foods for human nutrition (Dordrecht, Netherlands)》1979,29(1-2):245-251
Mature seeds of four Lupinus species,L. albus, L. angustifolius, L. luteus andL. mutabilis, have been analysed comprehensively to evaluate their potential for nutrition. Particular interest attaches to the comparison betweenlupinus species and soyabeans. All species are rich in high-quality protein, as judged from amino-acid profiles,In vitro studies indicate high levels of digestibility and imply the presence of few interfering factors. In contrast to many other legumes, lupinseeds are free of both protease inhibitors and haemagglutinins. Only one factor, a C-glycosyl poly-hydroxy flavone, which could conceivably interfere with protein absorption, has been identified. Lupinseed could possibly be developed as an oilseed crop, though oil contents are currently somewhat lower than those of soyabeans. The composition of lupinseed oil is similar to that of soyabean oil, both being limited in quality by the presence of linolenic acid. The bright yellow colour of the partially refined oil is due to the presence of the two carotenoids, β-carotene and zeaxanthin. Lupinseed is well-known to contain toxic alkaloids of the quinolizidine group. However, intensive breeding programmes involving all four named species have been in progress for many years. At least in the cases of the first three species, cultivars have been developed that are virtually alkaloid-free. Alkaloid profiles are of interest in being decisive chemotaxonomic indicators of species. The pyrimidine bases responsible for inducing favism through the consumption ofVicia faba are absent from lupinseed. Like soyabeans, lupinseed invariably contains a range of chemically complex saponins. Concentrations in the seed are of a similar order, but it is doubtful whether these should be considered significant anti-nutritional factors for Man. Lupinseeds contain a range of oligosaccharides—raffinose, stachyose and verbascose —which correspond with the flatus factors present in soyabeans and many other legumes. Levels, however, are no higher than those found in soyabeans. 相似文献