Subspecies specific° PAPD markers in rice

The culivated rice (Oryza sativa L. )is known to contain two major scb-species, indica (O. sativa L. ssp.indica) and japonica (O. sativa L.japonica )ssp. japonica). The indica andjaponica differentiation resulted insignifficance of hybrid sterility andhybrid breakdown, which are barriersof gene flow between the two majorsubgene pools within O. sativa.     

北纬30°--优质茶叶产区带

北纬30°是地球上一条奇特的地质带,也是一条优质茶叶产区带。西湖龙井、君山银针、蒙顶甘露等十大传统名茶中有九个就产生在这一纬度上,中国两大优质茶区正好穿它而过。产生这一优质茶叶生产带的原因:一是地球板块碰撞产生的奇异地貌和土壤母质;二是北纬30°的宜茶气候条件;三是生物多样性带来良好的生态环境。这一带生产的茶叶不仅品质良好,而且安全可靠,有着十分光明的发展前景     

光敏核不育系在沈阳（42°N）的育性观察

利用湖北农科院等单位提供的籼型光敏核不育系６１５４等５份，粳型光敏核不育系５０４７等８份，进行盆栽和大田栽培，Ａ做透光１１、１３、１３．５、１４小时及自然光照处理，结合温度自然分布，使２次枝梗分化至出穗期处于不同的光温组合中，探讨光敏核不育系在沈阳市（４２°Ｎ）的育性转换规律。结果表明，粳型与籼型光敏核不育系其基因表达条件差异很大，前者主要受光照因子控制，后者则受光温配合作用制约且温度尤为主导因素。在沈阳整个８月份为光敏核不育系的不育期，可以杂交制种。     

Field assessment of imidacloprid to reduce the spread of PVY° and PLRV in potato

A three year field study conducted at the Potato Research Centre in Fredericton, New Brunswick, showed that imidacloprid applied in furrow at planting or twice to the foliage in mid July could result in a limited reduction of PLRV spread in the potato crop. Tests did not determine any significant effect on the reduction of the spread of PVY. The aphicidal property of imidacloprid was confirmed.     

Changes in the potato (Solanum tuberosum L.) tuber at the onset of dormancy and during storage at 23°C and 3°C. II. Evaluation of protein patterns

Summary The changes in polypeptide profiles (2D-PAGE) occurring in the soluble and microsomal fractions of parenchymatic tissue of potato (Solanum tuberosum L.) tubers were studied during the last 30 d of maturation and during storage at 23°C and 3°C. The major changes were observed in the last period of tuber maturation, when several polypeptides disappeared and new ones appeared. At both 23°C and 3°C specific polypeptides disappeared in dormant tubers and new polypeptides appeared during storage. At 3°C specific changes in protein composition occurred, particularly in the microsomal fraction. The changes in polypeptide profiles are discussed in relation to the transition from “sink” to “source” of the tuber, the onset of dormancy and of sprouting ability and the activation of cold acclimation responses. The results are also discussed on the basis of the physiological and biochemical changes that occur in the parenchymatic tissue.     

Changes in the potato (Solanum tuberosum L.) tuber at the onset of dormancy and during storage at 23°C and 3°C. I. Biochemical and physiological parameters

Summary In the last 30 d of potato (Solanum tuberosum L.) tuber growth metabolic activity decreased. Levels of glucose-6-P and sucrose in whole tuber tissues declined and in tuber slices there was a decrease in the uptake from the medium and in the incorporation into macromolecules of [U-¹⁴C]sucrose. During storage at 23°C only the uptake of [U-¹⁴C]sucrose increased concomitant with tuber sprouting, indicating a possible involvement of the transport mechanisms in dormancy breaking. At 3°C, levels of reducing sugars and sucrose increased in response to the low temperature and increased release of K⁺ and malondialdehyde levels indicated cell membrane damage. The cell membrane functionality was restored at sprouting. The sprouting potential of the tubers was evaluated using the sprouting ability of single-bud explants (“seedcores”) in response to water, GA₃ or ABA dips. This sprouting potential of tubers changed with stage of tuber growth and storage duration and temperature, indicating that the tissue hormonal state changed strongly throughout tuber life, probably in relation with the “sink” to “source” transition.     

小罐茶“春茶行动48小时” 360°解读一罐好春茶的品质秘密

正3月28日至29日,在春茶上市之际,小罐茶邀请媒体和茶行业代表共赴安徽黄山,参与一场为期两天的"小罐茶春茶360°探秘之旅"。在云雾氤氲的高山茶园中、制茶大师的一嗅一品中、精益求精的拣剔把关中,探秘团成员们体验了从采茶、制茶、品控到生产的每个环节,见证了一罐好春茶的诞生。严格采摘标准,每一片叶子都来之不易做一罐好茶,好的鲜叶原料是高品质产品的基础。富溪乡是黄山毛峰的发源地,一直是历史名茶正宗黄山毛峰     

以99°茶吧独立运行为例探讨内蒙古高职生就业创业教育培养模式创新

就业困难,不少高职毕业生选择自主创业,在就业创业方向和模式上独辟蹊径,创设成果优良。特色茶吧作为让年轻一代群体在轻松愉悦的聊天环境下享受茶文化的一种固定场所,在高职生就业创业的模式选择中已经取得了有效成果。特色茶吧可以满足不同消费群体对茶叶饮品的选择,并且具备一定的时尚定位,与国人目前追求的物质文化需要相辅相成,发展前景极为广阔。本文通过具体概述内蒙古省区高职生就业发展现状,并且具体提出内蒙古省区高职生就业创业的发展模式创新改革措施。     

以99°茶吧独立运行为例探讨河南省高职生就业创业教育培养模式创新

随着社会经济的转型新变化,科技兴国与人才强国的策略变得越来越重要,国家和社会对全国各地的大学生就业情况也更加重视。河南省虽居于祖国中原地带,但其经济发展形势却不容乐观,因此当地的高职生就业创业情况更值得当地相关部门加以重视。在此文中,笔者将以99°茶吧独立运行为例,在茶文化、茶企营业传统与现代的结合中放大河南省高职生就业创业情况,探索一条学生就业创业教育培养的创新模式。     

光敏核不育水稻的光温反应研究：I．光敏核不育水稻在杭州(30°05 ′N) 自然条件下的育性表现

 通过大田分期播种，对现有主要光敏核不育水稻在杭州自然条件下的育性表达及其转换作了观察鉴定。结果表明，在杭州自然条件下，光敏核不育水稻的光温反应因遗传背景不同而异，育性转换的时间也不一致。温度在光敏核不育水稻育性表达与转换中起重要作用，对于籼型材料甚至占主导作用。