蚕豆根瘤菌抗药性菌株的筛选   总被引：3，自引：0，他引：3  

刁治民  冯廷花 《青海畜牧兽医杂志》1994,24(6):22-24

从青海不同生态类型土壤分离到蚕豆根瘤菌，将其培养至对数生长期，用含结晶紫浓度较高的平板筛选，采用逐步提高抗药性的办法，顺利获得抗药性菌株，经室内试验观察，已筛选出具有抗药性和良好固氮能力的快生型菌株。  相似文献   

黑豆酸奶的生产技术研究   总被引：1，自引：0，他引：1  

宋莲军  祝美云  张建威  何惠琴 《河南农业大学学报》2002,36(4):367-369,386

以黑豆、牛奶为主要原料,黑豆经灭酶、浸泡、磨浆、调配、杀菌、发酵而成黑豆酸奶.确定的最佳配方为:白砂糖80g·L-1 豆浆、牛奶质量比60∶40 羧甲基纤维素(CMC)1g·L-1 明胶0.5g·L-1 接种量50g·L-1,发酵温度44℃.  相似文献   

Effects of Faba Bean Leaves in Different Positions on the Yield and Photosynthetic Compensation after Defoliation     

M. Z. Xia 《Journal of Agronomy and Crop Science》1993,171(3):145-152

In a field experiment in the winter seasons of 1985/86 and 1988/89 at Xichang, China, the effects of defoliation on seed yield of Vicia faba and its photosynthetic compensation were investigated by removing all leaves, some leaves from different plant positions at the beginning of flowering and the beginning of pod formation. Seed yield decreased by 37.3–52.3 % in plants with upper leaves removed at the beginning of flowering. Removal of middle leaves at the beginning of pod formation had the most significant effect, followed by the of upper and lower leaves removed, causing yield decreases of 43.4–64.3 %, 18.6–24.7 % and 8.9–12.3 %, respectively. Removal of leaves at the beginning of pod formation resulted in a greater reduction in seed yield, total dry weight, harvest index, and number of pods and seeds per plant than leaf removal at the beginning of flowering.
The photosynthetic rate and export rate of photosynthate of upper leaves at the beginning of flowering, and middle leaves at the beginning of pod formation were the greatest during both years of the experiment. Photosynthetic rate increased and reached its maximum at 4–5 days after leaf removal, then decreased, but, yet greater than the control leaves at 9–11 days after leaf removal. In the meantime, transport of photosynthetic products was accelerated. In general, removal of leaves from the upper and middle third of the plant increased the export rate of photosynthate by ca. 20 %. Photosynthetic compensation could not fully make up the loss caused by leaf removal, so grain yield was decreased by all treatments. The full defoliation decreased yield by > 70 %.  相似文献   

油菜素甾醇促进蚕豆幼苗生长的研究     

邓如福  王三根 《西南大学学报(自然科学版)》1991,13(2):214-216

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Influence of Different Soil Moistures during the Vegetative Phase of Development of Field Bean (Vicia faba L. var. minor) on Leaf Water Status, Photosynthesis Rate and Plant Growth     

S. Grzesiak    W. Filek  J. Koscielniak 《Journal of Agronomy and Crop Science》1989,162(3):192-200

The effects of exposure in the vegetative phase of growth to 10-day spells of mild (30 % of field water capacity – fwc) and severe (20 % fwc) drought on leaf water status, photosynthesis rate, plant growth and distribution of dry matter were studied in field bean. Either drought level caused similar changes of leaf water status and reduced photosynthesis rates. In older leaves these drought effects were greater. Plants exposed to mild drought quickly recovered their full photosynthetic activity and growth rate when optimum water supply was restored, but after severe drought the slower rate of these processes persisted much longer. Reduced growth caused by drought was proportionally the same in stems, leaves and roots, so that the share of dry weights of these organs in total dry matter of whole plants was similar as in control.  相似文献   

蔓生长豇豆的生长与结荚特性   总被引：1，自引：1，他引：0  

关佩聪  刘厚诚  陈玉娣 《中国蔬菜》1998,1(4):3-0

以蔓生长豇豆锦穗白豆角和新青青豆角为试材,研究其生长动态、叶面积形成、净同化率（ＮＡＲ）和豆荚产量形成等。结果表明,两个品种生育过程中植株和各个器官的生长动态均呈Ｓ形曲线变化。锦穗白豆角的生长量和叶面积都比新青青豆角大。两品种的ＮＡＲ在营养生长过程都较低,生殖生长过程则提高。新青青豆角的ＮＡＲ比锦穗白豆角稍高。两个品种的结荚能力和豆荚产量无明显差异,豆荚产量形成呈Ｓ形曲线变化。  相似文献   

Cloning of <Emphasis Type="Bold">β</Emphasis>-tubulin and succinate dehydrogenase genes from <Emphasis Type="Italic">Uromyces fabae</Emphasis> and establishing selection conditions for their use in transformation     

Stefan G.R. Wirsel  Ralf T. Voegele  Reto Bänninger  Kurt W. Mendgen 《European journal of plant pathology / European Foundation for Plant Pathology》2004,110(8):767-777

The obligate biotrophic nature of rust fungi calls for an in planta selection scheme as a means of developing a rust transformation technology. We show that the fungicides benomyl (used as its formulated product benlate) and carboxin suppress morphogenesis of the rust fungus Uromyces fabae in vitro and disease in planta, the latter without affecting the health of the host. The limits of their applicability were determined regarding concentration, method of application and optimal time intervals of treatment. Besides procedures for selection, a stable transformation system will also need to include genetic markers allowing to enrich for transformed cells within a large background of untransformed cells. Since the molecular targets of benlate and carboxin had been identified as -tubulin and succinate dehydrogenase, respectively, the corresponding genes (Uf-TBBIand Uf-SUCDHI) were cloned and characterized. Molecular phylogenies demonstrate that both are typical homologs to those of other Basidiomycota. RT-PCR analysis confirmed that both genes are constitutively expressed in all developmental stages of the mitotic uredospore multiplication cycle. Since homologs of Uf-TBB1and Uf-SUCDH1 have been successfully used as selection markers in other fungal systems, they provide valuable tools to develop additional corner stones of a stable transformation system for rust fungi.  相似文献   

曲酸对绿豆种子萌发及幼苗生长的影响     

李镇江  杨志刚  唐晓芳  银学理  陈静  陈刚  杨学昭  张毅  饶航  叶莉 《陕西农业科学》2023,69(1):11-15

为更好地探索曲酸在农业上的应用效果,研究以蒸馏水、芸苔素内脂处理为对照,通过测定曲酸溶液浸种后绿豆种子的发芽势、发芽率以及幼苗鲜重、干重、茎长、根长、叶长、叶宽、根冠比、叶绿素等指标,探究不同曲酸浓度对绿豆种子萌发、幼苗生长及生理特性影响的差异。结果表明,浓度50～200 mg/L的曲酸溶液对绿豆种子的萌发和幼苗生长具有一定的促进作用,但随着曲酸浓度的增大,促进作用呈现减弱的趋势,其中以50 mg/L浓度的曲酸溶液处理效果最佳,能显著提高绿豆种子发芽率,促进幼苗生长,试验结果为曲酸在农业中的推广应用提供了一定的理论依据。  相似文献   

海南省优良油豆角品种引种比较试验   总被引：3，自引：0，他引：3  

田丽波  商桑  李绍鹏  吴优利 《北方园艺》2008,(7)

为筛选出适合海南岛反季节种植的优良油豆角品种,对引种的榆树大油豆、紫花油豆、九月青、一棵树、57号架油豆、将军豆等6个油豆角品种进行了品种比较.通过对适应性、植物学性状、产量、嫩荚的性状、抗病性的调查分析表明,6个油豆角品种均能在海南岛顺利完成整个生长发育过程;榆树大油豆产量最高(20 010 kg/hm2),抗病性最强,商品品质较好,可以作为中晚熟的优良品种进行推广;而将军豆产量虽低(15 050 kg/hm2),但其单荚重最大(19.67 g),抗病性最强,商品品质最好,紫花油豆产量较高(19 630 kg/hm2),外观商品性好,2个品种也可作为中、早熟品种在海南进行推广.  相似文献   

长豇豆遗传与育种研究进展   总被引：4，自引：0，他引：4  

杨连勇 《长江蔬菜》2008,(2):34-39

对长豇豆的起源与分类、种质资源收集与形态学鉴定作了简要概述.对长豇豆荚色、籽粒色、蕾瓣色、生长习性、熟性、抗逆性(耐寒、抗病虫)、杂种优势、产量、品质等主要农艺性状的遗传规律和相关性研究进展进行了综述,对灰色系统理论在育种中运用作了简单介绍,并对今后育种科研发展提出了几点建议.  相似文献