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为综合评价大豆种质资源的耐密性并筛选出高耐密性优良种质,本研究以前期初筛获得的90份耐密性大豆种质资源为试验材料,以高密度与常规密度条件下各耐密性状比值为基础数据,通过耐密指数与主成分分析两种方法共同对大豆耐密性进行综合评价.结果表明:高密度胁迫处理下,大豆单株粒重受影响最大,其次是分枝相关性状,最后是子叶痕直径;两种评价方法鉴定结果的重合度为42.8%;综合两种评价结果共鉴定出高耐密性大豆资源8份,分别是采种圃、黑河49、合交N13-333、坂本早生、黑河44、中科毛豆2号、N07和黑河43号.研究结果为今后大豆耐密性理论研究及耐密植新品种选育提供材料基础. 相似文献
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松嫩平原春小麦耐盐碱性鉴定及品种(系)筛选 总被引:2,自引:0,他引:2
为确定松嫩平原春小麦品种(系)耐盐碱性鉴定的适宜盐碱浓度,同时筛选耐盐碱小麦材料,以黑龙江省试种的30个春小麦品种(系)为试验材料,采用不同浓度NaHCO3溶液分别在春小麦萌发期和苗期进行盐碱胁迫处理,筛选适合耐盐碱性鉴定的胁迫处理浓度,并通过主成分分析、隶属函数分析、聚类分析等方法对30个春小麦品种萌发期和苗期的耐盐碱性进行综合评价。结果表明,150mmol·L-1 NaHCO3为小麦耐盐碱性筛选的理想鉴定浓度;30个春小麦品种(系)中,九三09-1933等7个品种(系)萌发期高度耐盐碱,北麦9号为萌发期盐碱敏感品种;九三08-51271、龙麦36、7767为苗期高度耐盐碱品种(系),克旱14号、九三08-7127为苗期盐碱敏感品种(系);综合评价萌发期与苗期鉴定结果,其中高度耐盐碱的品种(系)为龙麦36和09-9933,盐碱敏感品种(系)为九三08-7127和克旱14号,克旱7号等其他品种(系)中度耐盐碱。 相似文献
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2015—2016年度在大理州农科院粮作所试验基地对本院新选育的大麦新品系的丰产性、生育期、抗病性、抗逆性以及适应性等综合性状与利用价值进行鉴定和筛选。结果显示:这11个品系的产量较对照S500显著增产(P0.05),增幅在10.18%~33.55%之间,其中10个品系较对照呈极显著增产(P0.01),增幅在13.04%以上,且1014DM7-9-5-7、1014DM7-9-1-4、101DM8-26-6-3、106DM12-24-1-14、1226DM15-8、1203DM2-5这6个品系的丰产性好,综合性状优良,具有较好的应用前景。 相似文献
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针对豫北地区的大豆生产现状,从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。 相似文献
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Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods. 相似文献
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1 吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切 相似文献
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以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。 相似文献
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Sena L.P. VanderJagt D.J. Rivera C. Tsin A.T.C. Muhamadu I. Mahamadou O. Millson M. Pastuszyn A. Glew R.H. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):17-30
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
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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
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实施茶叶优势区域规划促进川茶产业持续发展 总被引:1,自引:0,他引:1
为了充分发挥四川茶叶的比较优势和自然资源优势,进一步提高川茶产业竞争力和促进农民增收,在四川省委、省政府重视下,在开展特色茶叶产品研究的基础上,制订了<四川省茶叶优势区域规划>,以期通过"规划"的实施,在基地建设、规模化生产、产业化经营等方面取得新的突破,为四川省盆周山区和丘陵地区的农村经济发展和农民增收做出新的更大贡献. 相似文献