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观察了捕食线虫性真菌——少孢节丛孢菌的超微结构，以探讨捕食线虫性真菌的杀虫机理。结果显示，少孢节丛孢菌属于隔膜类真菌，隔膜中央有孔，菌丝细胞一般呈长形竹节状；菌株的捕食器为黏性菌环和菌网，形成捕食器的菌丝细胞结构不同于一般的营养菌丝，胞质中含有许多电子密集体，呈大小不等的黑色类圆形颗粒状，多数排列在捕食器菌丝细胞的边缘区域，这是捕食线虫性真菌捕食器菌丝细胞的一个重要特征。 相似文献
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This study uses the Locke and Okali gender analysis framework to explore gender relations surrounding grain storage management and marketing in Binga District of Zimbabwe. The study was conducted during one grain storage season and involved multiple visits to selected households, which were used as case studies. The main question that the study sought to address was: “What bargaining goes on between men and women in the area of stored grain management and marketing?” Data were collected from four households, fitting into the following categories: simple monogamous, complex monogamous (two scenarios), and polygamous. Participatory rural appraisal tools and techniques were extensively used and formed the backdrop of all the data collection. The study established that much bargaining and strategizing occurs within the household in order for women to exercise control over the use of stored grain. The bargaining process was found to be a complex one of give-and-take without an immediately recognizable winner. There is evidence that women use this bargaining power to exert influence on their relative position in the household in terms of independent income generation and management, seniority, and overall household food security policies. While bargaining between and within gender remains shrouded in subtleness, individuals in a household consciously use their skills to manipulate the situation to their best advantage. This article is expected to initiate broader debate in the area of gender roles and bargaining in grain post-harvest management, an area often kept private by smallholder farmers in sub-Saharan Africa. 相似文献
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稻鸭共生对鸭肉品质和屠宰性能的影响 总被引：3，自引：0，他引：3
以云南麻鸭为试验材料,分别在稻鸭共生(稻鸭组)和常规网上平养(常规组)两种饲养模式下饲养至体重达1.8 kg,测定其常规肉品质和部分屠宰性能.结果表明:①两组间鸭肉失水率、嫩度、熟肉率、肉色亮度值和红度值无显著差异(P＞0.05);稻鸭组的pH值显著高于常规组(P＜0.05);肉色黄度值B极显著高于常规组(P＜0.01).②两组间屠宰率、半净膛率、全净膛率、胸肉率差异不显著(P＞0.05);稻鸭组的皮脂厚、腹脂率比常规组分别降低了18.52%、11.76%(P＜0.05);腿肉率提高了11.40%(P＜0.05).③稻鸭组的生长速度明显慢于常规组. 相似文献
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本实验用我们课题组从动物脏器提取的活性添加剂配合精饲料饲喂山羊,将山羊分为实验组和对照组,３０天后采血。用醋酸纤维薄膜电泳法测定血清蛋白组分,以α－乙酸萘酯酶染色法测定Ｔ淋巴细胞的活性,分析山羊的细胞免疫水平。结果表明：活性添加剂对山羊血清蛋白组分没有明显影响,而对山羊的细胞免疫活性却有较为明显的增强作用。此结果同我们以前所做有关活性添加剂的实验相一致。 相似文献
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通过不同放鸭只数的试验,研究了在中高产田单位面积放鸭的数量与产量构成因素和病虫草害发生的关系,分析了产量构成,病虫草害发生的情况,为稻一鸭共生模式技术的推广提供理论依据。 相似文献
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为提高繁育性能,实现一年一产,增加养殖效益,本文在西藏自治区仲巴县选择了30 头健康怀孕吉拉金丝牦牛开展对比补饲试验,对其生产的牦犊牛实施早期断奶试验。试验结果显示,对怀孕吉拉金丝牦牛补饲,在怀孕天数上,试验组与对照组差异不显著;在产后配种间隔天数上,对照组间隔148 天,试验Ⅰ组间隔83 天,试验Ⅱ组间隔87 天,试验Ⅰ、Ⅱ组较对照组差异显著。对牦犊牛进行早期断奶,对比牦犊牛初生重和60 日龄日增重,对照组、试验Ⅰ、Ⅱ组差异不显著;对比60 日龄断奶到180 日龄日增重,试验Ⅰ、Ⅱ组较对照组差异显著;180 日龄对照组平均日增重为248.197 2 g,试验Ⅰ组平均日增重为406.979 6 g,试验Ⅱ组平均日增重为399.994 4 g。在经济效益方面,10月龄青年牦牛试验组较对照组增加效益4 500 元/头。 相似文献
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云南稻-鸭共生模式效益的研究及综合评价（三） 总被引：15，自引：0，他引：15
通过不同放鸭只数的试验,研究了在中高产田单位面积放鸭的数量与产量构成因素和病虫草害发生的关系,分析了产量构成,病虫草害发生的情况,为稻－鸭共生模式技术的推广提供理论依据。 相似文献
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Sharanabasappa B. Yeri Kenta Shirasawa Manish K. Pandey M. V. C. Gowda Vanhi Sujay Manda Shriswathi Hajisaheb L. Nadaf Babu N. Motagi S. Lingaraju A. R. S. Bhat Rajeev K. Varshney P. U. Krishnaraj Ramesh S. Bhat 《Plant Breeding》2014,133(1):80-85
Heterogeneous inbred families segregating for rust resistance were identified from the two crosses involving susceptible (TAG 24 and TG 26) and resistant (GPBD 4) varieties of peanut. Rust‐resistant (less than score 5) and rust‐susceptible (more than score 5) plants were identified in each HIF and evaluated under rust epiphytotic conditions. The set of plants belonging to the same HIF, but differing significantly in rust resistance, not in other morphological and productivity traits, was regarded as near‐isogenic lines (NILs). Largely, rust‐resistant NILs had GPBD 4‐type allele, and susceptible NILs carried either TAG 24 or TG 26‐type allele at the three SSR loci (IPAHM103, GM1536 and GM2301) linked to a major genomic region governing rust resistance. Comparison of the remaining genomic regions between the NILs originating from each of the HIFs using transposon markers indicated a considerably high similarity of 86.4% and 83.1% in TAG 24 × GPPBD 4 and TG 26 × GPBD 4, respectively. These NILs are useful for fine mapping and expression analysis of rust resistance. 相似文献
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