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赤早5号是内蒙古赤峰市农科所以外引系K10为母本,自育系87黄12为父本育成的玉米单交种。2004年4月通
过内蒙古自治区品种审定委员会审定(蒙审玉2004016),2006年被内蒙古自治区列为良种补贴品种。该品种属早熟品种,需≥10℃活动积温2 300~2 500℃·d。1997~2000年在各级产量试验中表现早熟、高产、稳产、多抗。适宜在内蒙古赤峰、兴安盟、呼盟,河北、黑龙江省部分地区种植,到2006年已推广面积达3万多hm2。制种时,父母本行比1∶5或1∶6种植,父母本同期播种 相似文献
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玉米自交系吉853的选育与应用研究 总被引:8,自引:4,他引:4
吉853自交系在产量、品质、抗性等重要性状上有显著的突破,广适性优于同类的黄改系。组配的杂交种在综合性状上具明显优势。截至2007年,全国有34个育种单位以吉853为亲本育成58个杂交种通过审定,其中国家审定15个。获得省科技进步二等奖以上或有较大推广面积的品种有吉单180、吉单209、吉单261、吉新205、通吉100、科茂518、吉单342、吉单517等,吉单180、吉单209、吉单261、承玉14等品种分别被国家、吉林、内蒙古、河北等区试作为对照种。 相似文献
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玉米杂交种丹玉26选育技术报告 总被引:6,自引:6,他引:6
丹玉26(丹2100)是丹东农业科学院以自选系丹9046为母本,丹598为父本组配而成的玉米杂交种.该品种属晚熟品种,需≥10℃积温3 100℃·d左右.1995~1999年在各级各类区域试验中表现高产、稳产、抗病、抗倒、耐旱、适应性强.一般单产9 750 kg/hm2以上,比各地主栽品种增产8%以上.适宜在吉林南部、辽宁大部及华北春玉米区种植.种植密度以每公顷43 500株为宜,比空和清种均可 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