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江西省2002年审定通过的水稻新品种 总被引：1，自引：0，他引：1
１.赣早籼４９号系由江西省农业科学院水稻研究所育成的常规早稻品种。全生育期１０６．７天。株高７４．８３ｃｍ ,每６６７ｍ２ 有效穗３０．１５万 ,每穗总粒数５０．３３粒 ,结实率８２．６３% ,千粒重２４．４ｇ。出糙率７９．４ % ,整精米率４９．８ % ,粒长６．９ｍｍ ,长宽比３．３ ,垩白粒率１９% ,垩白度２．８% ,直链淀粉含量１４．０% ,胶稠度７４ｍｍ。稻瘟病抗性 :苗瘟０级 ,叶瘟０级 ,穗颈瘟０级 ,接种鉴定２级。２０００～２００１年参加江西省水稻区试 ,２０００年平均单产３５３．６９ｋｇ／６６７ｍ２ ,比对照赣早籼４０… 相似文献
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(１)津稻１２２９系天津市水稻研究所育成的粳型水稻新品种。全生育期１４５天 ,株高１１０～１２０ｃｍ ,分蘖力强 ,成穗率高 ,平均每穗１２４粒 ,结实率８５ %～９１% ,千粒重２６～２７ｇ。中抗稻瘟病 ,高抗稻曲病 ,耐盐碱 ,抗倒伏性中等。据１９９７～１９９９两年区域试验、两年生产试验１４个点次试验结果 :平均单产４７８．３ｋｇ／６６７ｍ２。(２)津糯６号系由天津市原种场选育成的粳型糯稻新品种。全生育期１７５天 ,株高１１０ｃｍ ,株型紧凑 ,茎秆粗壮 ,分蘖力强 ,耐盐碱 ,后期抗早衰 ,每穗１３０粒 ,结实率９２ % ,千粒重２４… 相似文献
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津稻５号天津市水稻研究所育成。粳型。全生育期１７６天 ,株高１１０ｃｍ ,株型紧凑 ,叶片上举 ;茎秆粗壮 ,抗倒 ,属紧穗型品种。每穗总粒数１３３粒 ,结实率８５ % ,千粒重２５ｇ,分蘖中等 ,成穗率高。后期熟色好 ,产量潜力高 ,丰产性和稳产性好 ,适应性强。抗穗颈瘟 ,中抗枝梗瘟病。１９９８、１９９９年参加天津市区试 ,平均单产５８８．９３ｋｇ／６６７ｍ２,较对照津稻１１８７增产１２．３%。１９９９年参加天津市生产试验 ,平均单产５５３．３ｋｇ／６６７ｍ２ ,较对照津稻１１８７增产１１．６ %。2001年天津市审定的水稻品种@张存… 相似文献
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《北方水稻》2015,(6)
<正>桥科951为辽宁省盐碱地利用研究所于2012年选育的水稻新品种,审定编号为辽审稻[2012]259号,于2014年通过国家审定,是辽宁省首个利用太空育种技术选育的水稻新品种。该品种全生育期154 d,株高105 cm,省区试两年平均每穴16穗,直立穗型,平均每穗着粒130.9个,结实率85%,千粒重26.5g,谷粒黄褐色,颖尖黄色,无芒。经农业部稻米品质中心分析:糙米率82.6%,精米率73.6%,整精米率68.4%,垩白米率34%,垩白度3.9%,透明度1级,碱消值6.7级,胶稠度82mm,直链淀粉含量17.9%,蛋白质含量9.2%。10项指标中有4 相似文献
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麦秸还田与氮肥运筹对超级稻强弱势粒粒重与品质的影响 总被引：8，自引：1，他引：7
以两个超级稻品种（籼稻扬两优6号和粳稻南粳45）为材料,设置麦秸还田和氮肥运筹两种处理方式,研究其对籽粒粒重与主要米质的影响。结果表明,两处理的影响程度在品种类型与不同粒位间（强、弱势粒）存在差异。与麦秸不还田相比,麦秸还田提高籽粒千粒重、粗蛋白含量和崩解值,降低了整精米率、垩白度、直链淀粉含量和消减值;与m基蘖肥∶m穗粒肥=5∶5处理相比,m基蘖肥∶m穗粒肥=7∶3处理增加了千粒重、垩白度、直链淀粉含量、崩解值,降低了整精米率、粗蛋白含量和消减值。两处理对弱势籽粒千粒重、整精米率、垩白度等的调控作用显著大于强势粒;对千粒重、整精米率、粗蛋白含量等的影响,麦秸还田与氮肥运筹之间存在互作效应;麦秸还田方式下,氮肥比例控制在5.5∶4.5或6∶4左右,可以较好地协调粒重与米质。 相似文献
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(１)舟９０３浙江省舟山市农科所育成的早稻新品种 ,由湖北省种子管理站引进。１９９８～１９９９年参加湖北省早稻品种区试 ,平均单产３６５．２ｋｇ／６６７ｍ２ ,比对照鄂早１１减产１．６ %。生产试验 :１９９８～１９９９年武穴、应城等地试种 ,单产４００ｋｇ／６６７ｍ２ 左右。全生育期１１０天。株高７７．７ｃｍ ,株形紧凑 ,叶片挺直 ,分蘖力强 ,耐肥抗倒 ,千粒重２３．１ｇ。高感白叶枯病 ,感穗颈稻瘟。米质优。适于湖北省作早稻种植 ,尤其适于中肥或低肥田种植。(２)嘉育９４８浙江省嘉兴市农科所育成的早稻新品种 ,由湖北省种… 相似文献
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品种来源:宁夏农林科学院作物研究所以88XW-495-1×84XZ-7杂交选育而成。2003年通过国家农作物品种审定委员会审定。特征特性:全生育期150～155d。株高100cm左右,株型紧凑,茎秆粗壮,叶片直立,苗色淡绿,主茎15片叶。耐肥抗倒,分蘖力较弱,半直立穗型。每穗实粒数100粒左右,结实率85%以上,千粒重26g。籽粒阔卵圆形,颖壳秆黄色、无芒。糙米率83.6%,精米率74.5%,整精米率60.2%,粒长4.9mm,垩白粒率52%,垩白度7.9%,长宽比1.7,透明度2级,碱消值7.0,胶稠度91mm,直链淀粉含量18.6%,蛋白质含量8.1%。产量表现:1999年晚熟区域试验平均单产13293kg/hm2,… 相似文献
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籼型三系杂交水稻主要品质性状在不同生态地区的配合力及遗传力分析 总被引：2，自引：0，他引：2
选择8个不育系和4个恢复系,采用不完全双列杂交试验设计（NCⅡ设计）,在两个不同生态区,对7个品质性状进行配合力、遗传力分析.结果表明,不同性状在两生态区的表现不尽相同.在南充点,直链淀粉含量和整精米率以加性效应为主,胶稠度和垩白度以非加性效应为主,垩白米率、蛋白质含量和长宽比受加性和非加性共同作用;在西昌点,直链淀粉含量和垩白米率以加性效应为主,胶稠度以非加性效应为主,垩白度、蛋白质含量、整精米率和长宽比均为加性和非加性共同作用.在南充点,除父母本对直链淀粉的贡献相差不大外,其余性状均以母本的贡献大;在西昌点,长宽比、整精米率和垩白米率以母本的贡献大些,垩白度、胶稠度、直链淀粉含量和蛋白质含量均以父本的贡献更大.在南充点,狭义遗传力大小顺序为：直链淀粉含量〉整精米率〉长宽比〉蛋白质含量≈垩白米率〉垩白度〉胶稠度;在西昌点狭义遗传力大小顺序为：直链淀粉含量〉垩白米率〉长宽比〉蛋白质含量〉整精米率〉垩白度〉胶稠度. 相似文献
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1996年天津市农作物品种审定委员会审定通过3个水稻新品种。（1）津稻308：系天津市农科院作物所1989年从本所育成的品系85－1235中系统选育而成，株高100～110厘米，株型紧凑、茎秆坚硬，叶片宽厚上举．分基力较强。大穗大粒型，每稳120粒左右．千粒重27～28克，颖尖褐色，无芒或项芒。糙米率81．9％、精米率74．6％，整精米率69．6％，垩白率8．5％、至白度0．3。中晚熟品种，全生育期165～170天，抗倒伏、耐盐碱、抗旱、丰产稳产、抗稻瘟病，对稻飞虱忍耐力强。不实率较高、不耐瘠薄。天津市春稻区域试验1992年平均亩产523．6公斤，较对… 相似文献
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《Journal of Crop Improvement》2013,27(2):415-432
Summary This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed. 相似文献
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《Plant Production Science》2013,16(2):189-198
AbstractGrain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike. 相似文献
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Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the
water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during
mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal
resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No
such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m−2 s−1 between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop. 相似文献
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Corné Kempenaar Thomas Been Johan Booij Frits van Evert Jean-Marie Michielsen Corné Kocks 《Potato Research》2017,60(3-4):295-305
Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed. 相似文献
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体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望. 相似文献
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以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。 相似文献