共查询到20条相似文献，搜索用时 62 毫秒
1.
为指导鲜食夏大豆高产优质新品种的选育与推广,分析了2006-2018年国家区试鲜食夏大豆13年的品种试验数据,研究了鲜食夏大豆品种14个重要农艺性状的演变规律。研究结果表明:2006-2018年8个鲜食夏大豆新品种通过国家审定;14个农艺性状的变异范围在6.75%～38.67%之间,A级口感率的变异系数最大,标准二粒荚宽最小;参试品种的平均鲜荚产量为10 468.9 kg·hm-2,较对照减产1.7%;随着年度的推进,鲜荚产量得到了提升,采青天数、株高、主茎节数、单株有效分枝数、单株有效鲜荚数有下降趋势,而多粒荚率、单株鲜荚重有上升趋势,百粒鲜重、标准二粒荚长和宽、标准荚率、A级口感率逐步提升。相关性分析表明,鲜荚产量与多粒荚率、单株鲜荚重、百粒鲜重、标准二粒荚长和宽、标准荚率极显著正相关,A级口感率与百粒鲜重、标准二粒荚长和宽极显著正相关。主成分分析表明,影响鲜食夏大豆性状变异的最主要因子是标准二粒荚长和宽、荚数、多粒荚率及株型因子,在鲜食夏大豆选育过程中应注重选择多粒荚多、荚长、荚大、粒大的品种进行组配,以提高鲜食夏大豆的产量和品质。 相似文献
2.
为指导鲜食春大豆高产优质新品种的选育与推广,分析了2004-2017年国家区试鲜食春大豆品种的14个重要农艺性状及其演变规律。研究结果显示:国家区试鲜食春大豆品种性状的遗传变异十分丰富,变异系数为5.9%～33.49%,遗传变异系数最大的性状是单株有效鲜荚数,而采青天数、标准二粒荚荚长和荚宽的遗传变异系数较小。随着年度的递进,鲜食春大豆的株型、鲜荚产量、口感、荚型性状获得了逐渐的改良。主成分分析表明,荚数与生育生长、鲜荚产量、株型、荚率、品尝品质和荚型因子是鲜食春大豆性状变异的最主要影响因子。相关性分析显示,鲜荚产量与单株有效分枝数、百粒鲜重、单株鲜荚重、标准二粒荚荚长极显著正相关,与500 g标准荚数极显著负相关,与其余性状相关性不显著。A级口感率与采青天数、株高、主茎节数、单株有效荚数等性状极显著负相关。因此,鲜食春大豆品种选育时,应注重分枝多、粒大荚长而饱满的亲本组配及后代选择,协调荚型、株型和生育期的改良,从而选育出高产优质鲜食春大豆新品种。 相似文献
3.
为筛选适合胶东半岛种植的鲜食大豆品种(系),本试验选取63个鲜食大豆品种(系)于2019—2021年进行田间种植，在鲜食期对13个产量相关农艺性状进行考查统计，并和鲜荚产量进行相关性和关联度分析。结果表明：参试品种(系)的各农艺性状变异系数在9.66%～86.53%之间；单株产量与节数、一粒荚数、标准荚数、单株荚数和标准荚长呈极显著正相关，与分枝数、空荚数和鲜重呈显著正相关，与株高、虫荚数、干重和标准荚宽呈不显著正相关。各性状与产量的关联度排行为单株荚数>单株荚重>鲜重>干重>有效分枝数>标准荚长>标准荚宽>主茎节数>标准荚数>株高>一粒荚数>空荚数>虫食荚数。对所有参试品种大豆(系)与理想品种(系)进行等权和加权关联分析，筛选出综合表现最优的7个品种，分别为辽鲜3号、晋豆39、南农29、辽08M13-1H、首豆38、引豆9701和南农95C-13,本研究为菜用大豆在胶东地区的推广和种植奠定了坚实的基础。 相似文献
4.
鲜食大豆浙鲜豆2号的选育与栽培技术 总被引：1，自引：0，他引：1
浙鲜豆2号是浙江省农业科学院育成的鲜食大豆新品种,有限结荚习性,株高29.5厘米,主茎节数8.9个,分枝数2.3个,叶片卵圆形、中等大小,灰毛,白花,种皮黄色,百粒鲜重60.4克,单株荚数22.6个,单株荚重41.6克,多粒荚率73.4%。口感品质为鲜脆型,每500克标准荚数202个,荚长、荚宽分别为5.2厘米和1.4厘米,标准荚率为73%。从播种至采收鲜荚约85天,一般鲜荚亩产量667.6公斤左右,轻感大豆花叶病毒病。适宜在北京、江苏南通、安徽合肥和铜陵周边相同生态区种植。 相似文献
5.
山东间作大豆产量与主要农艺性状关联分析 总被引：1，自引：0，他引：1
为明确间作大豆的性状表现,筛选适宜间作的高产、稳产性大豆品种,本研究在玉米大豆间作模式下,对50份大豆材料在两年的产量与11个主要农艺性状进行相关性及灰色关联度分析,并采用GGE双标图法进行品种适应性及稳产性分析。结果表明：50份材料的主要农艺及产量性状的变异系数在6.87%~77.32%,广义遗传力为0.62~0.97,且生育期、营养生长期、百粒重等9个性状的广义遗传力均大于0.8;相关性分析表明,单株产量与茎粗(0.75**)、生育期(0.76**)呈极显著正相关,其次为株高、主茎节数、分枝数、底荚高、营养生长期、百粒重、单株荚数、单株粒数;灰色关联度分析表明,单株产量与各农艺性状的关联顺序为茎粗>生育期>营养生长期>单株荚数>百粒重>底荚高>单株粒数>分枝数>主茎节数>株高>生殖生长期;GGE双标图法表明汾豆79、中作J7018和皖豆30为适宜间作的高产、稳产性较好的品种。 相似文献
6.
7.
为筛选适宜间作的大豆品种,以早、中、晚熟三种类型共16个大豆品种（系）为试验材料,在玉米大豆间作和大豆净作（为对照）模式下比较研究其农艺性状和产量构成因素。结果表明,各熟期类型品种在间作条件下的株高、平均节间长、倒伏率均显著高于净作对照,且早熟品种的株高、底荚高、主茎节数、平均节间长以及倒伏率显著低于中、晚熟品种。早、中熟品种在间作下的有效分枝数与对照差异不显著,而晚熟品种显著高于对照。各熟期类型品种在间作模式下的产量都显著低于相应的对照,早熟类型品种的单株有效荚、单株粒数、百粒重、单株产量以及公顷单产均极显著低于中、晚熟类型品种,而这些性状在中、晚熟品种间差异不显著。早、中熟品种在间作下的单株有效荚率均显著高于对照,晚熟品种的单株有效荚率显著高于中熟品种,中熟品种显著高于早熟品种。然而各品种类型间作下的完整粒率与净作对照无显著差异,中、晚熟品种的完整粒率显著高于早熟品种。通过相关性分析,间作下倒伏率与株高、主茎节数、平均节间长呈极显著正相关;单株有效荚率、单株粒重、完整粒率、产量均与生育期呈极显著正相关;玉豆共生期占全生育期比重与有效荚率、完整粒率、产量呈极显著负相关。上述结果表明,在玉米大豆间作模式下,中、晚熟大豆品种相比早熟品种有较长的光补偿时期,能获得较高的产量,是适宜与玉米间作种植的大豆品种类型。 相似文献
8.
9.
为研究浙西地区不同播期对鲜食春大豆产量和可溶性糖含量的影响,以鲜食春大豆品种衢春豆1号为试验材料,设置3月16日、3月23日、3月30日、4月6日、4月13日、4月20日和4月27日共7个播期处理,比较不同播期下鲜食大豆生育期、农艺性状和产量,棉子糖、蔗糖和水苏糖等可溶性糖含量的变化情况.结果表明:随着播期的延迟,营养生长时间缩短,生殖生长时期逐渐变长,且各处理差异显著;大豆农艺性状中单株荚重、单粒荚数、主茎节数和单株有效荚数呈现先增加后减少的趋势,百粒鲜重、每荚粒数和百荚鲜重呈现逐步减少的趋势,而底荚高度逐渐增高,秕荚数逐渐增多;大豆可溶性糖除棉子糖含量随着播期的推迟而下降,可溶性总糖、蔗糖、水苏糖、果糖和葡萄糖含量均呈现先增加后减少的总体变化趋势,4月6日播期下的大豆籽粒可溶性总糖、蔗糖、水苏糖含量达到最高峰,分别为107.60,42.20和34.67 mg·g-1,且这3种可溶性糖含量和百荚鲜重、单株荚数、百粒鲜重和每荚粒数4个荚相关性状极显著正相关,结合产量综合分析表明3月下旬至4月上旬为浙西地区春季大豆种植的适宜时期. 相似文献
10.
为了筛选和鉴定适宜云南省与玉米间作的大豆品种,本研究在玉米与大豆间作条件下,采用灰色关联度和系统聚类分析方法对44个大豆品种(系)的10个农艺及产量性状进行综合分析及评价。结果表明:参试品种各性状的变异系数的变异范围为7.3%~51.2%,说明各地大豆资源的表型多样性比较丰富。灰色关联分析表明影响间作大豆产量的性状依次为单株粒数、主茎节数、百粒重、单株荚数、分枝数、倒伏性、株高、节间长度、每荚粒数。利用系统聚类法将44个大豆品种分为了3大类,各类群性状之间的差异较明显,其中单株荚多、单株粒多、分枝多、百粒重适中的第一类是比较适宜与玉米间作的大豆品种(系)。 相似文献
11.
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
12.
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
13.
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
14.
15.
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
16.
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
17.
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
18.
M. D. Harrison Gestur Johnson R. D. Barmington 《American Journal of Potato Research》1970,47(10):386-393
A broadcast application of PCNB (Terraclor) resulted in a reasonably uniform distribution of the chemical in the soil with the concentration decreasing in a linear fashion with increasing depth in the soil profile. A banded application resuluted in a considerably higher chemical concentration at the 4–6 inch depth than at the 0–2 or the 2–4 inch depths. The problem of the lack of uniformity of chemical distribution could probably be solved by altering nozzle placement and size and allow use of the band method of application to minimize grower cost. More complete disking in the case of the broadcast treatment would probably result in a relatively uniform distribution of the chemical but at higher cost to the grower. PCNB application rates of 10, 15 and 25 lbs per acre broadcast and 71/2, 10 and 121/2 lbs per acre in a band significantly reduced the severity ofRhizoctonia infection of Russet Burbank potatoes but did not increase potato yields significantly. 相似文献
19.
P. Mésochina W. Martin-Rosset † J.-L. Peyraud ‡ P. Duncan § D. Micol† S. Boulot¶ 《Grass and Forage Science》1998,53(2):189-196
Data from in vivo digestibility trial with four to six horses fed twenty-seven forage-based diets are used to calculate prediction equations for the digestibility of dry and organic matter, based on the crude ash (CA), crude protein (CP) and crude fibre (CF) contents of diets and faeces. The most precise prediction of dry-matter digestibility (r.s.d. = 0.032, R2= 0.80) was derived from a multiple regression including faecal (CP, CF) and dietary parameters (CF). Among faecal parameters, CP was the best single predictor of both digestibility (r.s.d) = 0.040, r2= 0.63) and dietary CP content (r.s.d = 0.028, r2= 0.59). For biological reasons we propose a non-linear model that allows prediction of dry- and organic-matter digestibility from faecal CP Content with reasonable Precision (r.s.d = 0.038, 0.036, r2= 0.65, 0.74, respectively). This will be adequate for many studies, especially for free-living animals in rangelands. 相似文献
20.
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