共查询到20条相似文献,搜索用时 46 毫秒
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1选育过程
2001年以抗病优质新品系301(314×新海15号)为母本,以丰产优质品系107为父本杂交,经过连续多年在重病田进行定向选择,并在海南加代选育新品系,2004-2006年进行品系比较试验,该品系抗病性、丰产性、品质均表现较好.2007年参加自治区南疆早熟组长绒棉预备试验;2008-2009年参加自治区南疆早熟组长绒棉区域试验;2010年参加自治区南疆早熟组长绒棉生产试验.2011年4月通过新疆维吾尔自治区农作物品种审定委员会审定,审定编号为:新审棉2011年51号. 相似文献
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高产优质棉花新品系C_(58)、C_(44)简介杨春安湖南南县大通湖农场农科所413207棉花新品系C58、C44于1994年参加省区试以来,表现优异,为了探索选育的一批株系在产量.经济性状及纤维品质等方面的表现,从中筛选出最佳株系进行扩繁,特设立比... 相似文献
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W. L. Porter 《American Journal of Potato Research》1967,44(10):382-382
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Effects of timing and rate of N fertilizer application on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in herbage from perennial ryegrass/white clover pastures were studied at two sites in south-western Victoria, Australia. Nitrogen fertilizer (0, 15, 25, 30, 45 and 60 kg ha–1 ) was applied as urea in mid-April, early May, mid-May, early June and mid-June 1996 to pastures grazed by dairy cows. At Site 1, N fertilizer resulted in a linear increase in P, K, S, Mg and Cl concentrations in herbage and a linear decrease in Ca concentration. For all times of application, concentrations of P, K, Ca, Mg and Cl in herbage increased by 0·0048, 0·08, −0·010, 0·0013 and 0·053 g kg–1 dry matter (DM) per kg N applied respectively. For S concentration, maximum responses occurred in mid-May (0·012 g kg–1 DM per kg N applied). At Site 2, N fertilizer resulted in a linear increase in P, S and Na concentrations in herbage, a linear decrease in Ca concentration and a curvilinear increase in K and Cl concentration. The maximum responses for P, S and K concentrations in herbage occurred for the N application in mid-June and were 0·015, 0·008 and 0·47 g kg–1 DM per kg N applied respectively. For Cl concentration, the maximum response occurred for the N application in early June and was 0·225 g kg–1 DM per kg N applied. Overall, applications of N fertilizer up to 60 kg ha–1 did not alter herbage mineral concentration to levels that might affect pasture growth or animal health. 相似文献
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Krishna Kumari S Thayumanavan B 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,53(1):47-56
Scanning electron microscope (SEM) pictures of small millet starch granules showed more large polygonal and few small spherical or polygonal granules. The granules of small millets resembled those of rice starch granules. The size of the starch granules ranged from 0.8–10 m. The size of the granules was larger in barnyard millet and smaller in proso millet. Several granules showed deep indentation caused by protein bodies. SEM of starch isolated from 24 hour-germinated kodo millet showed pitting or pinholes at some points due to the attack of amylases (preferentially on bigger granules). Brabender viscoamylograph studies on small millet starches revealed that the gelatinization temperatures ranged from 75.8 to 84.9 ° C. Barnyard millet possessed lower amylograph viscosity, minimum breakdown, and relative breakdown values when compared to the other small millets. 相似文献