Narbon Vetch (Vicia narbonensis L.): A Potential Feed Legume Crop for Dry Areas in West Asia     

A. M. Abd El  Moneim 《Journal of Agronomy and Crop Science》1992,169(5):347-353

Provision of feed supplies for the rapidly growing livestock population is essential in West Asia. Shortages can be alleviated by growing forage crops in the existing fallow lands.
Narbon vetch (Vicia narbonensis L.) is a leguminous species with high yield potential, drought tolerance and cold resistance. It could be used for grain and straw production as source for animal feed in dry areas. It is good source of protein with seeds contain 28 % protein yielding 364 kg per hectare protein, whilst straw contains 9 % protein and yields a similar amounts of digestible protein per hectare.
Nine promising lines of Narbon vetch developed at ICARDA were tested at two sites over four years under rainfed conditions. Since climatic conditions were considered to be of considerable importance, each site in each year was treated as a separate environment to give eight environments with annual rainfall varied from 195 to 504 mm.
Narbon vetch possessed high seedling vigour with rapid winter growth and negligible cold damage. Grain yield varied form 0.47 to 1.90 t/ha, with a harvest index varying from 30 to 40 %. The data indicated that below 300 mm rainfall the grain yield varied from 0.47 t/ha when rain fall was 195 mm to 1.4 t/ha when rainfall was 245 mm. Most of the lines had wide adaptation to dry areas in terms of both grain yield and stability. Climate, except early spring rains had little effect on biological and grain yields.  相似文献   

灵芝硒多糖SeGLP—1抑制小鼠肝腹水癌作用的研究   总被引：8，自引：0，他引：8  

尚德静  崔乔  高林 《食用菌学报》2001,8(3):34-38

灵芝硒多糖SeGLP-1由葡萄糖、甘露糖、木糖、半乳糖和鼠李糖组成，与灵芝多糖一样是由α-糖苷键连接的吡喃多糖，硒在多糖内极可能是以O=Se=O的形式结合。给移杆肝腹水癌HCa-f的小鼠每日注射50mg/kg的SeGLP-1,15d后抑癌率可达80%，说明SeGLP-1的抑癌作用与其分子组成和分子结构的变化有关。  相似文献   

葡萄二倍体与四倍体品种间杂交胚珠的离体培养   总被引：12，自引：2，他引：10  

徐海英  阎爱玲  张国军 《果树学报》2001,18(6):317-320

为了克服葡萄二倍体品种与四倍体品种之间的交配障碍,进行了杂交胚珠的离体培养研究。发芽胚珠的取样时期集中于授粉后35～75d,其中多数以二倍体作母本的组合在授粉后55d取样的发芽率最高,以四倍体作母本的组合授粉后70d取样的发芽率最高。基本培养模式为:发育培养基-(剥胚)萌发培养基-生长培养基。用二倍体品种作母本时,所有组合均获得了培养苗,在1号培养基上培养的胚珠发芽率高于2号培养基。反交对培养基的要求有相反趋势,其中2个组合未得到培养苗。授粉后60d,直接剥出杂种胚进行培养,得到了最高发芽率。综合分析初步认为,用二倍体品种作母本比用四倍体品种作母本容易获得杂交后代。  相似文献   

O,O-二烷基-N-莰-2-基(硫)磷酰胺酯的合成     

王大升  马明科  陈万义 《中国农业大学学报》1992,(2):203-206

合成了14个含有 N-莰-2-基的磷酰胺和硫代磷酰胺类化合物,用红外、核磁及元素分析确定其结构,并探讨了~(31)Pδ值的规律性变化。初步生物试验表明,磷酰胺类化合物对水稻发芽具有明显的抑制作用,其中化合物Ⅱ1的活性大于对照药剂抗倒胺但低于多效唑。  相似文献   

苹果试管苗不定根起源及其发育状况的研究   总被引：4，自引：0，他引：4  

马俊戏  陈四维 《河北农业大学学报》1992,15(4):46-50

利用光学和扫描电子显微镜观察结果表明,经琼脂生根培养基诱导产生的长富—2苹果 (Malus pumila Mill.) 试管苗的不定根起源于维管形成层。这种不定根发育不良,根表面缺乏根毛,内部解剖构造为典型的初生结构。为避免因不定根吸收、运输能力差而影响试管苗移栽成活,宜采用通透性良好的基质进行瓶内或瓶外生根,可诱导出优质不定根。  相似文献   

春小麦蛋白质、脂肪、淀粉含量间的相关与回归分析   总被引：2，自引：0，他引：2  

孙继堂  司爱香 《甘肃农业大学学报》1989,(4):44-56

本文通过对20个春小麦品种(或品系)蛋白质、脂肪、淀粉百分含量间的相关、回归、协方差分析,表明蛋白质百分含量与淀粉百分含量间为极显著的负相关;脂肪百分含量与淀粉百分含量间为极显著的负相关;蛋白质百分含量与脂肪百分含量间为极显著的正相关。并建立了淀粉、脂肪、蛋白质百分含量间的回归方程。在同一试验条件下,各品种(或品系)蛋白质、脂肪、淀粉百分含量变异系数的大小,在一定程度上反映出各品种在品质性状上的纯合程度。变异系数愈小,表明纯合程度愈高;变异系数愈大,表明纯合程度愈低。因此,在那些变异系数较大的品种(或品系)中,可选出表型性状与原品种(或品系)基本相似,而在品质性状上却有较大提高的优质新品系。  相似文献   

大豆室内耐冷筛选及其在田间的应用研究   总被引：4，自引：1，他引：3  

李育军  常汝镇 《大豆科学》1992,11(1):49-57

本试验把生长箱大豆耐低温萌发筛选与田间早春播研究相结合,验证耐低温发芽的可靠性。在实验室,萌发期表现抗冷的大豆,田间出昔期仍表现抗冷或较抗冷。实验表明,大豆出苗的生物学最低温度平均为7.1℃,所需有效积温136℃。地温的高低直接影响大豆早春出苗的多寡,两者呈密切的正相关。黄、青、黑豆中,以黑豆抵抗早春不良气候条件的能力最强。  相似文献   

Spring Barley Responses to Row Spacing and Fungicide Triadimefon in Regions with a Short Crop-growing Season     

S. Leibovitch    B. L. Ma    Wanga E.  Maloba D. L. Smith 《Journal of Agronomy and Crop Science》1992,169(3):209-215

Aspects of intensive management practices such as high-yielding cultivars, narrow-row spacings and fungicide treatments could potentially increase cereal yields in regions with a short crop-growing season and occasionally dry and hot weather. A field experiment was carried out at McGill University, Canada for three years (1987 to 1989) to test the effects of triadimefon (1-[4-chlorophenoxy]-3,3-dimethyl-1-[1H-1,2,4-triazol-1-yl]-2-butanone, or Bayleton, a trade name) fungicide (0 vs. 140 g a.i. ha⁻¹) and row spacing (10 vs. 20 cm) on the yield components, yield and other agronomic traits (spike emergence, days to maturity, leaf disease and plant height) of spring barley ( Hordeum vulgare L.) cv. Cadette, Laurier and Leger. A cultivar by row spacing interaction resulted in a 11 to 13.5 % increase in grain yield due to narrow rows for Laurier in two out of the three years and up to 16 % for Leger in one year. Over the three years grain yields were on average increased 6 to 12 % due to use of the narrower row spacing. Fungicide application to barley at the early heading stage effectively controlled leaf diseases without influence on yield components or grain yield. Our results indicate that some components of intensive management such as narrow row spacing can be applicable in regions with a short crop-growing season.  相似文献   

采用现代食品加工技术开发蛋白质食物资源     

刘良忠 《湖北农学院学报》1994,(4)

本文分析了现阶段我国人民的食物结构以及食品加工在开发蛋白质食物开源中的地位和作用，并从五个方面进行了论述。  相似文献   

马传贫驴白细胞弱毒疫苗株跨膜蛋白主要免疫决定区基因的克隆与表达   总被引：3，自引：0，他引：3  

薛飞  贾斌  朱远茂  杨建德  王晓钧  相文华  赵立平  吕晓玲  沈荣显 《中国预防兽医学报》2003,25(5):321-325

从感染驴白细胞的马传贫驴白细胞弱毒疫苗株前病毒DNA中克隆了编码跨膜蛋白主要免疫决定区(TMIR)的基因，并在大肠杆菌中进行了表达。所表达的融合蛋白有一部分是可溶的，其氨基端带有6个组氨酸的标签，因此可以用固定化金属离子亲和层析法在非变性条件下进行纯化。在间接酶联免疫吸附试验(ELISA)和免疫印迹试验中，重组的TMIR蛋白可与马传贫阳性血清样品发生反应，而与健康马血清无任何反应。这表明该重组蛋白具有良好的抗原性和特异性，可用于马传贫弱毒疫苗株在体内外复制、接种马体内免疫应答及马传贫诊断的研究。  相似文献