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1.赣早籼53号江西省农业科学院原子能应用研究所通过“M90503”与“26-44”杂交选育的常规早稻品种。全生育期110.9天 ,株高87.82cm。病区自然诱发鉴定稻瘟病抗性 :苗瘟4级 ,叶瘟3级 ,穗颈瘟5级。2001～2002年参加江西省水稻区试 ,2001年平均单产406.62kg/667m2,比对照赣早籼40号增产7.65 % ;2002年平均单产426.55kg/667m2 ,比对照赣早籼40号增产1.8%。适宜在赣中北地区种植。2.赣早籼54号江西农业大学农学院通过“望稻1号”与“浙9248”杂交选育的常规早稻品种。全生育期111.4天 ,株高87.08cm。病区自然诱发鉴定稻瘟病抗性 :苗瘟0级 ,叶瘟… 相似文献
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(1 )赣早籼 47号 系抚州地区农科所、中国科学院遗传研究所、抚州地区种子公司育成的早稻新品种。全生育期 1 0 8天 ,株高 83 cm。分蘖力中等 ,结实率 72 % ,千粒重 2 5.7g。稻瘟病抗性苗瘟 0级 ,叶瘟 2级 ,穗瘟 0级。 1 998～ 1 999年参加江西省区试 ,平均单产 340 .6 kg/667m2 ,比对照品种赣早籼 37号增产显著。适宜赣中、赣北地区作早稻种植。(2 )赣早籼 48号 系芦溪县农业局、芦溪县农科所育成的早稻新品种。全生育期 1 1 1天 ,株高 90 cm,株型松散适中 ,茎秆粗壮 ,剑叶上挺 ,结实率 74% ,千粒重 2 5.8g。稻瘟病抗性苗瘟 0级 ,叶瘟 3… 相似文献
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1.湘辐994湖南省原子能农业应用研究所通过对湘辐87-12/湘早籼20号的F1 种子进行辐射处理后选育而成。该品种全生育期112天 ,属早稻迟熟类型。抗性 :叶瘟7级 ,穗瘟7级 ,白叶枯病3级。湖南省区试两年平均单产465.1kg/667m2 ,比对照湘早籼19号低4.7 % ,减产显著。适宜在湖南省稻瘟病轻发区作早稻种植。2.湘丰早119湖南省水稻研究所采用中鉴100//湘早籼3号/泸红早1号选育而成。全生育期108天左右 ,属早稻中熟类型。抗性 :叶瘟7级 ,穗颈瘟9级 ,白叶枯病5级。湖南省区试两年平均单产444.88kg/667m2,比对照湘早籼13号增产1.82 %。适宜在湖南省非… 相似文献
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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.金优９７４由湖南省衡阳市农业科学研究所育成、江西省种子管理站引进。全生育期１１４天。株高８１ｃｍ ,结实率７５ % ,千粒重２５ｇ。对稻瘟病抗性一般。大田一般单产４２０ｋｇ／６６７ｍ２。适宜赣中、赣北地区种植。２.国丰一号由中国水稻研究所育成、江西省种子管理站引进。全生育期１２３天。株高９９ｃｍ ,分蘖力中等 ,结实率７８．８ % ,千粒重２７．５ｇ。稻瘟病抗性 :苗瘟０级 ,穗颈瘟３级。１９９８～１９９９年参加江西省水稻区试 ,１９９８年平均单产４５４．９２ｋｇ／６６７ｍ２,与对照汕优晚３平产 ;１９９９年平均单… 相似文献
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中早23 由中国水稻研究所采用合作 938／稻丰占杂交F6经体细胞无性系变异技术选育的常规早稻品种。全生育期110．9天,株高81．40cm。稻瘟病抗性自然诱发鉴定：苗瘟0级,叶瘟2级,穗颈瘟5级。2002～2003年参加江西省水稻区试,平均每667m^2产量分别为449．23kg(比对照浙733减产0．24％)、442．26kg(比对照浙733增产0．62％)。江西省各地均可种植。 相似文献
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(１)威优８２系三明市农科所选育而成的早籼迟熟杂交稻新组合。作早稻全生育期１２４天。株型集散适中 ,茎秆坚韧 ,分蘖力中等。株高９２．５ｃｍ ,平均穗粒数１２０粒 ,结实率８３ % ,千粒重２５．５ｇ。１９９７～１９９８年经省水稻品种抗瘟联合鉴定综合评价为中抗稻瘟病 ,中抗白叶枯病 ,纹枯病轻。１９９７～１９９８年参加福建省早杂优三系组区试 ,平均单产分别为６８２３ｋｇ／ｈｍ２和６７５９ｋｇ／ｈｍ２ ,比对照威优６４增产２．１５ %和７．３１ %。适宜福建省作早稻推广种植。(２)南厦０６０系南平市农科所、厦门大学生物学系育… 相似文献
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1.矮秀占广东省农业科学院水稻研究所选育的感温型常规稻品种。品种来源 :丰矮占1号//新麻占/七秀占。晚季全生育期113天左右 ,比粳籼89早熟3天。稻米外观品质为晚季一级至特二级。高抗稻瘟病 ,抗性频率中B群、中C群和全群均为100 % ,病圃穗颈瘟为1级 ,中抗白叶枯病 (3级 )。缺点是穗基部谷粒成熟较慢 ,纹枯病较重。2000、2001年晚季参加省区试 ,平均单产分别为435.2kg/667m2和436.2kg/667m2,比对照粳籼89分别增产6.86%和2.55%。适宜广东各地晚季种植和粤北以外地区早季种植。2.粤农占广东省农业科学院水稻研究所选育的感温型常规稻品种。… 相似文献
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2003年浙江省审定通过的水稻品种 总被引：1，自引：1，他引：0
1.嘉早312浙江省嘉兴市农科院选育的早籼稻品种。2001年浙江省早籼稻区试 ,平均单产483.39kg/667m2,比对照浙733增产13.6% (极显著 ) ;2002年续试 ,平均单产420.9kg/667m2 ,比对照嘉育293增产8.14%。2002年浙江省生产试验平均单产374.6kg/667m2 ,比对照嘉育293增产1.82 %。该品种全生育期109.45天 ,茎秆粗壮 ,株高适中 ,分蘖力中等 ,穗型较大 ,穗粒重结构协调 ,耐肥抗倒。米质较优。中抗白叶枯病 ,中感稻瘟病。适宜浙江省作早籼稻种植 ,但应注意稻瘟病的防治。2.中早21中国水稻研究所选育的中熟早籼稻品种。2001年浙江省金华市区试 ,平均单… 相似文献
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一、选育经过宁早78系宁德地区农科所用宁早517／梧农号杂交，经四年七代选育于1994年定名，其亲缘系谱如图：二、特征特性1、生育期宁早78属早稻中熟品种，1995年参加宁德地区区试，全生育期120d，比对照种“119”迟熟0．sd；活动积温2641．6℃，晚季倒种全生育期109～1lid，1997年宁德所观察全生育期118d，比“119”早熟id。2、抗稻瘟性经多年试种，示范均未发现叶癌和穗颈瘟。1995年宁德所植保室稻瘟诱发鉴定，叶瘟0级，穗颈瘟1级。1997年再诱发鉴定，叶瘟丑级，穗颈瘟0级。3、经济性状1995年参加宁德地区区试，平均株高88．6cm，产量517… 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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《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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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
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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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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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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