无柱头外露高异交率早熟晚粳不育系嘉禾316A的选育

嘉禾316A是浙江省嘉兴市农业科学研究院选育的柱头无外露、高异交结实率的BT型早熟晚粳不育系,于2017年通过浙江省农作物品种审定委员会审定。该不育系具有开颖角度大、柱头活力好且时间长、异交结实率高等特点,所配组合杂交制种产量高,其中中嘉优6号(嘉禾316A/中恢7206)于2017年4月通过浙江省品种审定。     

籼型紫色糯稻温敏核不育系坤S的选育与应用

坤S是以Y58S为母本、广西武鸣农家紫色糯稻品种为父本杂交选育而成的籼型紫色糯稻温敏核不育系。该不育系具有不育性稳定、不育期长、开花习性好、配合力强、株叶型好、可繁性好和种皮紫色等特点,2016年通过广西壮族自治区农作物品种审定委员会田间技术鉴定。所配杂交组合坤两优1号、坤两优3号和坤两优22于2018年通过广西区品种审定,其中,坤两优1号于2018年还通过了江西省品种审定。     

高产抗病杂交中粳盐优1号

盐优1号系盐都县农业科学研究所用优质矮杆抗病不育系盐粳5号A与本所选育的优质籼粳亚种恢复系盐恢93005配组而成的杂交粳稻新组合。该组合具有抗病性强,品质优,商品性好,产量高,株型理想等特点。2002年2月通过江苏省农作物品种审定。     

高柱头外露率优质粳稻不育系163A的选育与应用

163A是毕节市农业科学研究所以BT型不育系BJ-1A为母本、毕粳43/BJ-1B选系中优良单株作父本杂交,后通过多代回交转育而成的粳稻不育系。该不育系不育性稳定,不育株率100%,套袋自交不育度99.979%,开花和异交性好,柱头自然外露率高达75.5%,稻米品质优。2017年4月通过贵州省农作物品种审定委员会办公室组织的技术鉴定。该不育系配合力高,所配组合黔粳优57(163A/NR210)和黔粳优2号(163A/黔粳恢2号)分别于2017年7月和2018年7月通过贵州省农作物品种审定委员会审定。     

优质高产杂交粳稻新品种中粳优1号

中粳优1号是天津市水稻研究所利用自育不育系6A和恢复系津恢1号组配而成的杂交粳稻新品种,该品种具有米质优良、产最优势显著、抗性好等特点,于2005年通过国家审定.介绍了该品种的选育经过、特征特性、栽培技术要点.     

三系杂交粳稻新组合连8优3号

连8优3号是江苏金万禾农业科技有限公司以自主选育的BT型早熟中粳三系不育系连8A作母本,以含广亲和基因的籼粳交恢复系云R3作父本配组育成的三系杂交粳稻新组合,具有丰产、抗病、抗倒能力强、米质优、熟期早、转色好等优点,2017年通过河南省农作物品种审定委员会审定。     

籼型三系香稻不育系悠香123A选育与应用

悠香123A是用香型保持系恒丰B与荃9311B杂交，在F₃代选择有香味、性状优良单株与荃9311A测交并连续多代回交选育而成的三系不育系。该不育系具有不育性好、米粒香、抗病性强等特点，于2021年通过福建省农作物品种审定委员会审定。利用悠香123A与长优2所配杂交组合悠香优2号于2021年通过国家品种审定。     

云粳优1号

云粳优1号(曾用名滇粳优1号)是云南省农科院粳稻育种中心以银条粳×合系34号细长粒型粳稻新品种。其突出特点是稻米品质好,籽粒细长,垩白粒率低。2004年通过云南省农作物品种审定委员会审定,是云南省通过审定的第一个细长粒型粳稻品种。特征特性:云粳优1号为中偏矮秆旱熟中间型中粳。株高92.6cm,秆稍细,弹性好,株形较好,剑叶角度大,分蘖力强,穗层整齐。穗长19.2cm,穗总粒数98粒,穗实粒数72粒,千粒重25.5g,籽粒细长,壳色浅黄,不落粒,全生育期180d左右。耐肥力和抗倒伏性较强,熟色好。2003年稻米品质经农业部稻米及制品质量监督检测中心分析,…     

杂交晚粳泗优422

泗优422是江苏省农科院粮作所用新育成的中粳不育系泗稻8号A引用湖南杂交稻研究中心的粳稻恢复系轮回422测配选育而成。该组合属三系早熟晚粳,产量高、米质优、抗病性好。几年来参加各项试验和示范表现杂种优势明显,增产显著。1993年4月通过江苏省农作物品种审定委员会审定,列入江苏省晚粳地区重点推广新组合。1产量表现 1989年本院小区鉴定平均亩产561.5kg,比六优3-2增产7.9%,1990年在省杂交晚粳预备试验,6个点平均亩产570.28kg,比对照武育粳2号增产5.3%。1990～1991年苏州市杂交晚粳品比试验中,6个点平均亩产611.33kg,比秀水04增产9.7%,1…     

晚粳不育系甬粳2号A及其籼粳杂交晚稻组合的选育及应用

采用粳不/籼恢三系法途径,以优良晚粳型核质互作雄性不育系选育和对粳型不育系强恢的中籼型恢复系选育为突破口,育成综合性状优、易被籼稻恢复系恢复的晚粳型不育系甬粳2号A和多个强恢中籼恢复系,并以甬粳2号A为母本、中籼恢复系为父本育成了4个籼粳杂交晚稻组合通过国家和多省审定或认定,在浙江、福建、广西、江西等省大面积推广应用。甬粳2号A及其籼粳杂交晚稻组合的选育及大面积推广应用,表明三系法粳不/籼恢是籼粳杂种优势利用的重要途径。     

高粱新品种沈杂10号

沈杂10号是沈阳市农业科学院于2005年以自选不育系7-02A为母本,自选恢复系F0018为父本杂交选育而成的高粱新品种。2007—2008年参加全国高粱品种春播晚熟组区域试验,平均产量8 838.0 kg/hm2,居第1位,2008年参加全国高粱品种春播晚熟组生产试验,平均产量9 033.0 kg/hm2,居第1位,并于2010年通过国家鉴定。具有高产、抗病、抗逆等特点。     

糯稻新品种版纳糯18号特征特性及栽培技术

版纳糯18号是西双版纳州农业科学研究所1996年早季采用滇引313号作母本与勐腊糯作父本杂交选育而成的中熟白糯稻品种,具有高产、优质、适口性好、千粒重大等特点,2014年通过云南省农作物品种审定委员会审定。本文详细介绍了该品种的特征特性和高产优质栽培技术。     

玉米新品种漯湘玉一号的遗传组成及主要特征特性分析

对玉米新品种漯湘玉一号是以自交系漯420A为母本和郑22为父本选育而成的.具有株型紧凑、高产稳产、优质早熟、抗逆性强,适应性广等特点.     

高直链淀粉含量杂交水稻新组合川香优37的选育及栽培技术要点

川香优37系四川省农业科学院水稻高粱研究所应用四川省农业科学院作物所育成的三系不育系川香29A与自育恢复系泸恢37组配育成的中籼迟熟杂交稻新组合,2013年通过四川省农作物品种审定委员会审定。该组合具有直链淀粉含量高,丰产性突出,稳产性好,适应性广,抗稻瘟病能力较强等特点,适宜在四川省平坝丘陵区种植。     

长江下游不同生态区双季优质晚稻生长特性和温光利用差异

【目的】研究在机插条件下长江下游不同生态区各类型优质晚稻产量、生长特性和温光利用的差异,为选择适宜在该地区作为双季种植的优质晚稻品种提供参考依据。【方法】以2016年和2017年筛选适合长江下游机插的双季优质晚稻为材料(常规籼稻、杂交籼稻、常规粳稻和常优杂粳共20个品种),比较在机插条件下浙江富阳(30.05°N, 119.95°E,海拔17.9 m)与安徽庐江(31.15ºN, 117.16ºE,海拔14 m)两个生态区在产量、生育期、干物质积累以及温光利用方面的差异。【结果】各类型晚稻产量高纬度试点均高于低纬度试验点。与浙江富阳点相比,安徽庐江点种植的常规籼稻、杂交籼稻、常规粳稻、常优杂粳稻产量分别高11.1%、12.9%、6.6%和12.4%。同一试点种植时,常优杂粳产量最高,常规籼稻最低。高纬度点种植时,生育期延长,干物质积累量增加。高纬度点生育期延长杂交籼稻最长(10.4 d),干物质积累量高纬度点增幅常规粳稻最大(齐穗期和成熟期分别增加11.93%和9.44%)。同一试点种植时,干物质积累量杂交稻大于常规稻。籼稻灌浆期和全生育期累积的有效积温两个纬度点差异不明显,但日照时数和太阳辐射及其利用率均是高纬度点显著高;粳稻灌浆期和全生育期累积的有效积温高纬度点明显较低,累积日照时数高纬度点变化不明显,而累积太阳辐射则显著增加;温光资源利用率的变化趋势与此一致;同一试点种植时,生育期、干物质积累量以及温光资源利用率均是粳稻大于籼稻。【结论】晚籼稻在安徽庐江点种植时能充分利用温光资源从而提高产量,晚粳稻对温光资源利用率差异不明显,安徽庐江点产量增加的原因是生育期延长和干物质增加。     

中籼新品种青两优916特征特性及栽培技术

青两优916系河南省信阳市农业科学院以矮青34s为母本、香丰916作父本组配选育而成的中籼迟熟两系杂交水稻新组合,具有分蘖力强、高产、优质、抗病抗倒性好、结实率高、千粒重大等特点,2013年通过河南省农作物品种审定委员会审定。本文详细介绍了该品种的特征特性和高产优质栽培措施。     

Changes in Chlorophyll Fluorescence of Rice Mutants Induced by High Hydrostatic Pressure

Three mutants of rice (Oryza sativa L. ), Mutant 1, Mutant 2 and Mutant 3, which were selected by high hydrostatic pressure (75 MPa), and their parent Yuexiangzhan were used to study the changes in chlorophyll fluorescence during different growth stages. In all the three mutants, the function of PS Ⅱ was improved, Fv/ Fm ratio of mutants increased compared to their parent at tillering and heading stage, and ФPS Ⅱ also improved except for Mutant 2 at heading stage. Similar to their parent, the mutants exhibited slight photoinhibition at noon and almost complete recovery to initial levels of 6:00 after 18:00 at heading stage. At milking stage, the photoinhibition in the mutants was obvious, and recovered rapidly compared to the parent. Yields of individual plant and grain/straw ratio were also higher in three mutants than the parent. Results indicated that characteristics of chlorophyll fluorescence in leaves of mutants and their photoinhibition in the field had changed. It is suggested that high hydrostatic pressure induction could be applied as a new effective approach in high-yield rice breeding in the future.     

Difference in Growth Characteristics,Utilization of Temperature and Illumination of Double- Cropping High Quality Late Rice in Different Ecological Regions of the Lower Reaches of the Yangtze River

【Objective】Under machine-transplanting conditions, four different types of late rice cultivars with high quality were used to investigate the differences of yield, growth characteristics, utilization of temperature and illumination. The results will lay a theoretical basis for the selection of double-cropping late rice varieties suitable for different ecological regions in the lower reaches of the Yangtze River.【Method】The yield, growth duration, dry matter accumulation, and utilization of temperature and illumination of double-cropping late rice were comparatively studied using four kinds of rice varieties as test materials namely indica conventional rice, indica hybrid rice, japonica conventional rice and Changyou japonica hybrid rice (20 varieties in total, selected between 2016 and 2017, all of which were high-quality rice in the lower reaches of the Yangtze River as double-cropping late rice). The experiment was carried out in two cities, Fuyang, Zhejiang Province (30.05º N, 119.95º E, 17.93 m above sea level) and Lujiang, Anhui Province (31.15º N, 117.16º E, 14 m above sea level).【Result】The yield of the four-types of late rice at high latitude was higher than that at low latitude. The yield of indica conventional rice, indica hybrid rice, japonica conventional rice, and Changyou japonica hybrid rice grown in Lujiang, Anhui Province was 11.1%, 12.9%, 6.6% and 12.4% higher than that in Fuyang, Zhejiang Province. When planted in the same places, Changyou japonica hybrid rice had the highest yield, and conventional indica rice had the lowest. The growth period was longer and dry matter accumulation was higher at high latitudes. When planted at high altitudes, the indica hybrid rice growth duration was the longest (10.4 d), and the increase in dry matter accumulation was the largest in conventional japonica rice (11.93% in full heading stage and 9.44% in mature stage). When planted in the same place, the dry matter accumulation was higher in hybrid rice than conventional rice. There was no significant difference in effective accumulated temperature between the filling stage and the whole growth duration of indica rice, but the sunshine hours, solar radiation, and its utilization rate were significantly higher at high latitudes. The effective accumulated temperature decreased significantly in the filling stage and the whole growth stage of japonica rice, but the change of accumulated sunshine hours was not obvious, while the accumulated solar radiation increased significantly at high latitudes. These were consistent with the changing trend of the utilization rate of the temperature and light resources. When planted at the same latitude, the growth period, dry matter accumulation, temperature and light resource utilization rate of japonica rice were higher than those of indica rice.【Conclusion】Late indica rice could make full use of temperature and light resources in order to improve its yield when planted in Lujiang, Anhui Province, but the difference of the utilization efficiency in the temperature and light resources of late japonica rice was not obvious. The yield of late japonica rice in Lujiang, Anhui Province increased because of the extension of the growth duration and the increase of dry matter accumulation.     

杂交晚籼新组合三香优714的选育与应用

三香优714是衡阳市农业科学研究所用优质不育系三香A作母本,恢复系yo714作父本杂交配组育成的杂交晚籼新组合.该组合具有米质较优、高产、生育期适宜、适应性广等特点,经国家南方区试鉴定,平均产量7.12 t/hm2,比对照汕优46增产3.77%,达显著水平,且主要米质指标达部颁二级优质米标准.2004年10月通过国家农作物品种审定委员会审定.     

棉花新品种冀棉818的选育及栽培技术

冀棉818是以W112为母本,抗单258-1为父本,经过多年南繁北育定向选择,形成的转基因抗虫棉新品种,2019年通过河北省农作物品种审定委员会审定,具有早熟、丰产、抗病虫等特点。阐述了冀棉818的选育过程、主要特征特性和栽培技术要点。