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1.
对10个中稻新品种与对照Ⅱ优明86在大田生产条件下的产量,抗逆性等特征特性进行生产试验,结果表明川优2189、两优616、福两优1586等品种适合中高海拔地区作中稻栽培;广优2186、广优3301、中浙优1号、花2优3301等品种适合高海拔区域作中稻栽培。  相似文献   

2.
以两优667为对照,选用广优673、Y两优5866、甬优17、欣优827、嘉丰优2号、中浙2优58、Ⅱ优039等7个中稻新品种进行简比试验。结果表明,甬优17、嘉丰优2号、广优673等3个品种生育期适中、株型较紧凑、后期转色好、穗大粒多、综合性状良好等特点,适宜作为烟后稻推广品种扩大示范种植。  相似文献   

3.
2015年,引进6个杂交中稻新品种在永泰大洋进行田间简比试验。结果表明:浙优18、广优673、福两优1587、乐优3301表现较好,具有穗大粒多,生育期适中,综合性状良好等特点,适宜永泰县中、高海拔地区作中稻栽培。总结了各品种在永泰种植的产量及农艺性状表现。  相似文献   

4.
2014年引进深两优865、和两优1号等9个品种,以Ⅱ优明86作对照在浦城作中稻种植进行对比试验。结果表明:参试品种生育期在130~134 d,其中深两优865、广优673和扬籼优68等品种表现优良,可在浦城县扩大示范推广。主要介绍了各品种在浦城县种植的农艺性状及产量表现。  相似文献   

5.
为筛选出适应衡南县种植的优质高产杂交中稻品种,引进16个近几年通过湖南省或者国家审定的水稻新品种进行了对比试验。结果表明,隆两优1377、隆两优1988、Y两优900、Y两优1998、隆两优97、荃优华占、隆两优1319、隆两优黄莉占、两优688、隆两优华占等品种分蘖力强、穗大粒多、产量高,可作为中稻品种在衡南县大面积推广种植;Y两优9918、梦两优黄莉占可适当引进种植;湘两优1号、C两优华占和Y两优696作中稻栽培生育期较短,产量较低,不建议在衡南县推广种植。  相似文献   

6.
2014年引进8个晚稻新品种在庐丰乡中坊村粮食产能区进行展示对比试验,结果表明:广优772、广优3186、中浙优10号、两优676、福龙两优29抗性强,熟期转色佳,综合性状好,比对照天优华占增产5.34%~12.44%,建议进一步扩大示范。总结了表现较好品种的农艺性状及产量表现。  相似文献   

7.
中高海拔中稻区水稻品种筛选试验   总被引:2,自引:0,他引:2  
2016年在连城县曲溪乡种植9个杂交水稻品种,以宜优673为对照进行对比试验,结果表明:杂交水稻品种两优688、中浙优10号、中浙优8号、花2优3301、特优716表现高产、优质,抗性强,综合性状好,其产量比对照增产4.8%~18.8%,适宜在中高海拔中稻区扩大种植。  相似文献   

8.
广优772是福建禾丰种业有限公司、福建省农业科学院水稻研究所、三明市农业科学院利用广抗13A与福恢772配组育成的三系中籼杂交水稻品种,2015年通过福建省农作物品种审定。通过设置"九二○"在不同抽穗时期喷施不同施用量的试验,研究"九二○"对广优772制种母本株高、穗颈、包颈粒率、结实率和制种产量的影响,结果表明广优772获得制种较高产量的"九二○"喷施最佳时期为母本抽穗15%~20%,喷施量为300~375g/hm~2。  相似文献   

9.
中浙优8号是中国水稻所与浙江勿忘农种业公司选育的"三系"迟熟杂交籼稻,于2006年通过浙江省农作物品种审定。2013年引进尤溪高海拔山区种植,表现植株较大、穗大粒多,后期转色好等特点。主要介绍了中浙优8号在尤溪高海拔山区示范种植表现及栽培技术要点。  相似文献   

10.
引进泰丰优2068、嘉丰优2号、荃优212、恒优丝占、野香优676等5个水稻新品种在顺昌县作中稻种植,以宜优673为对照进行品种简比试验,试验结果表明:嘉丰优2号、荃优212、野香优676、泰丰优2068等4个品种丰产性好、抗性强、生育期适中,株型较紧凑,穗大粒多、后期转色好,综合性状良好等特点,适宜在顺昌县作为中稻推广品种扩大示范种植。  相似文献   

11.
In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply.  相似文献   

12.
通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT50)的变异范围为-7.6~-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。  相似文献   

13.
对造成福建省漳州市东山县的芦笋枯萎病病原菌进行分子鉴定,以期确定病原菌的属、种名,为防治该病害寻求理论依据。试验对分离纯化的病原菌核糖体DNA的ITS区进行测序,在Genbank中搜索其同源性并构建它们的系统发育树,结果表明:引起芦笋枯萎病的病原菌是镰刀属中的尖孢镰刀菌(Fusarium oxysporum),且病原菌之间的同源性高达89%,遗传差异不显著。  相似文献   

14.
橡胶树丛枝病病原的抗血清制备与应用   总被引:5,自引:1,他引:4  
以感染橡胶树丛枝病病原的长春花为材料,制备得到橡胶丛枝病病原菌抽提液,以抽提液为抗原免疫家兔,制备抗血清,经微量沉淀测定,抗血清效价为1:2048。应用橡胶丛枝病抗血清检测橡胶褐皮病,无症苗木检出率达30%-37%,可疑的褐皮病树检出率达85.7%。  相似文献   

15.
One hundred and fifty-six pre-roost gatherings of starlings were observed at 28 sites around a roost in west Norfolk during winter. Pre-roost gatherings occurred more frequently at individual farmyards compared with individual fields, but 82% of the sites where gatherings occurred were on fields. The size of gatherings was greater, the closer to the roost. Birds in pre-roost gatherings on fields of autumn-sown winter wheat spent most of the time feeding and had a diet composed almost exclusively of wheat seeds. Birds in gatherings on grass fields also fed intensively whereas only 31% of birds at farmyards were feeding. The implications that these results have with regard to potential damage to fields of winter wheat and around farmyards are discussed.  相似文献   

16.
为了寻找一种高效的荔枝果实瞬时基因表达方法,本研究以荔枝品种‘新球蜜荔’(Litchi chinensis Sonn. var. ‘Xinqiumili’)为试材,利用农杆菌注射法对荔枝果实组织进行转化,研究了果实发育时期、菌株种类、注射部位、取样时间、菌液浓度等对转化效率的影响。结果表明:选择果肉已完全包裹种子的Ⅱb期果实进行连体注射,在果柄、果皮、种子、果肉分别注入OD600值为2.4的农杆菌菌株GV3101,4 d后取样进行检测,4个组织的GUS染色率较高。本研究成功建立了适用于荔枝果实的基因瞬时表达系统,为今后快速鉴定荔枝果实相关基因功能提供了基础。  相似文献   

17.
2020年10月17日,《中华人民共和国生物安全法》(以下简称《生物安全法》)通过全国人大常委会的审议,自2021年4月15日起施行.生物技术的研究与应用安全是《生物安全法》涉及的主要内容之一,基因编辑作为近几年生物技术领域的研究热点,其安全性评价和监管备受关注.本文概述了基因编辑技术的应用现状,比较了不同国家对基因编...  相似文献   

18.
为深入研究昆虫病原真菌蝉拟青霉疏水蛋白PChyd基因的功能,根据蝉拟青霉基因组信息克隆疏水蛋白PChyd基因,对该基因序列进行生物信息学分析,使用qRT-PCR技术对其在不同培养条件或阶段下的表达模式进行分析,并通过酶切酶连的方法构建了该基因的敲除载体。结果表明:PChyd基因的开放阅读框序列全长303 bp,编码100 aa,包含22 aa的信号肽序列和70 aa疏水蛋白功能区域。系统发育分析显示该基因与粗糙虫草菌亲缘关系最近。qRT-PCR结果显示PChyd基因在PDA培养的菌丝体、诱导的附着胞、诱导的芽生孢子中表达量显著高于另外2个样品,其中芽生孢子表达量最高,暗示该基因在蝉拟青霉侵染初期和在昆虫血腔中定殖阶段可能具有重要作用。凝胶电泳结果表明,成功构建了该基因的敲除载体,扩增出含有上臂、HPH、下臂的3356 bp左右的片段。本研究为进一步探究蝉拟青霉疏水蛋白PChyd基因的致病机理、生防工程菌的改造奠定了基础。  相似文献   

19.
波罗蜜叶片突变体叶绿素含量测定和超微结构观察   总被引:1,自引:0,他引:1  
波罗蜜(Artocarpus heterophyllus)是一种热带果树,至今对其突变体的研究少有报道。本研究以波罗蜜叶片为试验材料,探究其叶片出现白化和返绿现象的可能原因。(1)用分光光度计法、比色法测定波罗蜜叶片突变体和正常绿叶的叶绿素及叶绿素前体物质含量;(2)用叶绿素酶Elisa试剂盒测定叶绿素酶活性;(3)用透射电子显微镜对叶绿体的超微形态结构进行观察。研究结果表明:(1)不同叶色所产生的叶绿素a含量、叶绿素b含量、叶绿素总含量、类胡萝卜素含量均存在显著差异;(2)波罗蜜叶片突变体和正常绿叶的叶绿素合成前体物质含量之间并没有出现显著性差异;(3)对波罗蜜叶片的叶绿素酶活性进行测定时,发现其活性出现显著差异,但对其叶绿素含量的差异性并没有产生较大影响;(4)观察波罗蜜叶片内叶绿体超微形态结构时,发现正常绿叶的叶绿体形态完好且数量较多,白化叶和返绿叶的叶绿体内部结构存在缺陷,其原因是叶绿体基粒构建阶段受阻;基于测定波罗蜜叶片中的叶绿素、叶绿素前体物质含量和叶绿素酶活性,并观察波罗蜜叶片内叶绿体的超微形态结构,对得到的数据结果进行比较分析。本研究推测是在叶绿素合成阶段,原脱植基叶绿素合成叶绿素时受阻及叶绿体发不良导致波罗蜜出现白化和返绿现象,为今后进一步综合研究波罗蜜突变体提供理论依据。  相似文献   

20.
Mechanism of action of insecticidal secondary metabolites of plant origin   总被引:1,自引:0,他引:1  
Insect pest management is facing the economic and ecological challenge worldwide due to the human and environmental hazards caused by majority of the synthetic pesticide chemicals. Identification of novel effective insecticidal compounds is essential to combat increasing resistance rates. Botanicals containing active insecticidal phytochemicals appear to be promising to address some of these problems. Therefore, there is a continuous need to explore new active molecules with different mechanisms of action. Secondary metabolites present in plants apparently function as defense (toxic), which inhibits reproduction and other processes. The phytochemical biomolecules could be used for maximizing the effectiveness and specificity in future insecticide design with specific or multiple target sites, while ensuring the economic and ecological sustainability. In this article, the current state of knowledge on phytochemical sources and insecticidal activity, their mechanism of action in insects, resistance, and promising advances made in phytochemical research are reviewed.  相似文献   

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