共查询到19条相似文献,搜索用时 187 毫秒
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经福建省蘑菇菌种审定委员会批准,蘑菇杂交新菌株 As2796作为1992~1993年产季的试推广用种,栽培总面积超过600万 m~2。As2796是从近2000个杂交种的单孢分离物中选出。其酯酶同工酶遗传型为HG_4型,呈典型的杂合态。在福建省经过1989~1992年三个产季的初筛、复筛与中试,表现突出,比As1671、As1789等偏 G 型杂交种具有更大的产菇能 相似文献
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配制天然、有机、合成等43种不同配方的培养基,接种双孢蘑菇品种As2796菌丝块,观察菌丝在培养皿中生长的菌落形态变化并测定菌丝的生长速度,以探讨培养基质对双孢蘑菇品种As2796菌落形态的影响。试验结果:双孢蘑菇As2796菌落形态及菌丝生长速度明显受培养基质影响,菌落形态表现为气生、半气生、贴生等类型;不同配方中葡萄糖的添加量对菌丝生长产生不同的影响。 相似文献
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为研究双孢蘑菇基质降解能力退化的相关基因表达差异及分子机制,克隆了正常菌株As2796及其两个退化突变体菌株2796-3、2796-5,在mRNA差异显示(DDRT-PCR)分析中发现的5个差异基因及其上游约1200bp的调控序列,并进行了序列测定与比较。结果表明,这些基因与上游序列在三个菌株中并无实质性差异,推测该退化性状更可能是转录调控相关基因变异所引起的。 相似文献
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1 品种选择
各地应根据当地气候条件和市场要求选择品种,目前国内普遍应用的是由福建省蘑菇菌种研究推广站选育的杂交品种As2796。该品种菇质优、抗逆性强,适合于罐藏或鲜销。 相似文献
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This study was set up to investigate the morphological and fruiting characteristics of anther derived triploid papaya and evaluate their usefulness in commercial fruit production and breeding. A commercial diploid dwarf cultivar, ‘Wonder blight’ and 26 anther derived papaya strains were raised in the same green house. Data were collected on their morphological and fruiting characteristics like trunk height, fruiting height and the sizes of leaves, flowers and fruits. The anther derived papaya strains were variable in height and could be classified into dwarf, semi dwarf and tall. All the anther derived papaya strains bore only female flowers and produced fruits parthenocarpically. Parthenocarpic ability was variable among the strains. The dwarf and semi dwarf strains were fewer than the tall strains and they had good bearing and high yield of fruits. Two dwarf strains particularly produced parthenocarpic fruits that weighed an average of 670.0 and 871.3 g, compared to the diploid cultivar, ‘Wonder blight’, whose fruits weighed 696.4 g. The combination of short stature with a high yield of large fruits means that these strains have a lot of potential for exploitation in both breeding and commercial fruit production. 相似文献
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镰刀菌引起的北京市草莓根腐病病原鉴定 总被引:4,自引:0,他引:4
对北京市昌平区采集的35个草莓根腐病病样进行病原鉴定,结果分离获得13个菌株,根据培养特征和形态学鉴定,确定分离到的菌株均为尖孢镰刀菌(Fusarium oxysporum)|选取真菌通用引物ITS1/ITS4扩增菌株的rDNA-ITS序列并进行测序,通过与GenBank数据库序列比对,分子鉴定结果与形态学一致。将分离到的菌株回接到健康草莓幼苗上,植株表现出与田间发病相似的症状,重新分离能够得到相同的病原物。基于形态学、分子生物学鉴定及致病性检测,最终确定北京市昌平区草莓根腐病的病原菌为Fusarium oxysporum。 相似文献
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在吉林省集安市、柳河县、辽宁省本溪县和阜新县进行了酿造冰红山葡萄酒新品种"北冰红"、生产主栽品种"左优红"、"双优"和"双红"的定向栽培技术应用与推广研究。结果表明:"北冰红"、"左优红"、"双优"和"双红"品种均适宜这些地区的土壤和气候,各品种表现抗霜霉病、果粒和果穗大、出汁率和果实含糖高、总酸和单宁低,用其果实酿造的甜红、干红和冰红山葡萄酒酒质好;得出应用山葡萄定向栽培技术比常规的栽培技术增产平均27.6%,栽培效益是种植玉米2.1~3.0倍,效益显著。 相似文献
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北虫草商品化栽培技术的研究 总被引:1,自引:0,他引:1
对4个北虫草菌株、5个培养基配方和3种栽培容器进行了北虫草栽培试验研究,并从经济效益方面对其进行了估算分析.结果表明:金地一号菌株优质、高产、商品性好、经济效益高,可作为今后北方地区室内栽培的当家优良菌株进行推广种植;小麦培养基栽培北虫草,不仅产量高、质量好,而且成本低,故采用小麦培养基更具有优势;塑料瓶栽培北虫草,具有重量轻、利于灭菌、可多次重复使用等特点,可作为今后商品化、规模化、工厂化栽培北虫草之首选容器. 相似文献
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WANG Qian GONG Mu-xin ZHAO Hui WANG Yue-xiu YU Mei Li Ke-lin HUANG Qi-fu LI Bo-guang YAN Jing 《园艺学报》2003,19(5):664-667
AIM:To observe the changes of glycemia and serum cholesterol and triglyceride in diabetic nephropathy rats and therapeutic effects of Xiaoke Keli Ji.METHODS:3/4 nephrectomy was adopted firstly, three weeks later streptozotocin(STZ) was administered intraperitoneally to establish diabetic nephropathy model in rats. Animals were divided into four groups:model group, Xiaoke Keli Ji treatment group, positive control group and sham group. Changes of serum sugar and serum creatinine, cholesterol and triglyceride were examined at 1, 2, 3, 4, 5 weeks after STZ injection. Renal tissue samples were adopted at 6th week and studied by light microscopy.RESULTS:Model group demonstrated different degree of glomerular sclerosis. Lesions in treatment group were alleviated. Serum creatinine, serum sugar and serum cholesterol were higher at 1, 2, 3, 4, 5 weeks after STZ injection in model group than that of the sham group (P<0. 05), serum triglyceride was higher at 1, 2, 3, 5 weeks after STZ injection in model group than that of the sham group(P<0. 05). Xiaoke Keli Ji reduced those changes. Serum sugar was in positive correlation with serum lipoprotein.CONCLUSION:Diabetic nephropathy model was duplicated successfully. High serum sugar may lead to high serum lipoprotein, Xiaoke Keli Ji may treat diabetic nephropathy by reducing serum sugar and serum cholesterol and triglyceride. 相似文献