优质香型红米杂交水稻新组合渝红优9341

渝红优9341系重庆市农业科学院渝优水稻团队用自育的优质香型三系不育系渝香813A和优质红米恢复系渝恢9341配组育成的迟熟优质香型红米三系杂交中籼新组合,2020年6月通过重庆市农作物品种审定委员会审定.     

高直链淀粉三系杂交水稻新组合渝优21

渝优21系重庆金穗种业有限责任公司和重庆市农业科学院用重庆市农业科学院选育的不育系渝802A与恢复系渝恢2103育成的中籼迟熟三系杂交水稻新组合,具有丰产稳产、直链淀粉含量高、米质较好等特点,2018年通过重庆市农作物品种审定委员会审定,为重庆市首个通过审定的高直链淀粉杂交水稻组合。     

丰产稳产型三系杂交水稻新组合渝优8421

渝优8421是重庆市农业科学院用自育的抗稻瘟病水稻三系不育系渝843A和优质水稻恢复系渝恢2103配组育成的丰产稳产型三系杂交水稻新组合。该组合具有丰产稳产性好、稻瘟病抗性强、适应区域广、适宜轻简化种植等优势,2020年通过重庆市农作物品种审定委员会审定。     

耐热杂交粳稻新组合热粳优35

热粳优35是重庆市农业科学院水稻研究所、重庆市水稻工程中心和重庆中一种业有限公司用自育不育系热粳1A和自育恢复系粳恢35配组育成的高产、耐热、抗病、迟熟三系杂交粳稻新组合。2014年2月通过重庆市农作物品种审定委员会审定(渝审稻2014008)。     

早熟优质高产杂交中籼新组合陵优6760

陵优6760是重庆市渝东南农业科学院用自育不育系陵6A与自育优质恢复系涪恢0760配组育成的早熟中籼杂交水稻新组合.该组合产量高,米质优,早熟,2017年5月通过重庆市农作物品种审定委员会审定.     

高配合力水稻三系不育系渝802A的选育与应用

渝802A是重庆市农业科学院用优ⅠB与Ⅱ-32B杂交后经体细胞培养技术,F3代中选择优良单株再与1840A测交并连续多代回交选育而成的籼型水稻三系不育系,具有不育性稳定、米质较优、开花习性好、配合力强等特点,2007年8月通过重庆市农作物品种审定委员会技术鉴定,先后配组的渝优600、渝优528、渝优1351、渝优7109和渝优红9等多个组合通过了省级或国家审定.     

优质高产抗病杂交水稻新组合渝优1号

渝优1号是重庆市作物研究所用自育不育系渝5A与自育恢复系渝恢933配组而成的中籼迟熟杂交水稻新组合.该组合稻米品质在重庆生态条件下能达国标优质稻谷3级标准,并具有产量高、抗稻瘟病能力较强、适应性广等特点,于2004年12月通过重庆市农作物品种审定委员会审定.     

三系杂交中籼组合渝优865高产制种技术

渝优865是重庆金穗种业有限责任公司用重庆市农业科学院选育的不育系802A与恢复系渝恢865配组育成的中籼迟熟三系杂交水稻新组合,具有产量高、抗病性强、适应性广等优点,2013年通过重庆市审定(渝审稻2013001)。介绍了渝优865的亲本特征特性,总结了渝优865在重庆的高产制种技术。     

杂交中籼稻新组合Q优12

优12是重庆中一种业有限公司与重庆市农业科学院水稻所用自育新不育系Q4A与自育恢复系R1222配组育成的中籼迟熟三系杂交水稻新组合.该组合株叶形态好,熟期适中,适应性广,产量高,米质较优.2008年通过重庆市农作物品种审定委员会审定(渝审稻2008002).     

优质杂交中籼新组合Q优5号

Q优5号是重庆市种子公司和重庆市农科所用自育优质不育系Q2A与成恢047配组而成的中籼优质杂交水稻新组合.该组合具有米质优、产量高、抗病力较强、生育期适中等特点,2004年通过重庆市农作物品种审定委员会审定(渝审稻2004001),适宜重庆海拔800 m以下作中稻种植.     

早熟丰产机采棉花品种——新石K26

主要介绍新石K26的选育过程、生物学特性、产量、纤维品质、抗病性及栽培技术要点。     

长江流域棉花轻简高效种植技术探讨

长江流域棉区是中国三大主要产棉区之一。近年来,受劳动力成本上升,棉花用工繁多、比较效益下降,以及生产中机械化、信息化程度低等因素影响,当地棉花种植面积急剧萎缩。为改变现状,从棉花品种、轻简化机械化管理技术、绿色高效栽培技术以及现代农业信息化智能化技术等方面进行了分析,探讨了长江流域棉花轻简高效种植技术措施及研究方向,为长江流域棉花产业持续发展提供参考。     

Effects of application of nitrogen fertilizer on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in perennial ryegrass/white clover pastures in south-western Victoria, Australia

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.     

Characterization of starches of proso,foxtail, barnyard,kodo, and little millets

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.