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薄皮甜瓜新品种蒙甜2号是以齐甜1号自交系(自交编号为B96-57-23-8-(12)-20)为母本、5504(中国农业科学院郑州果树研究所引进)自交系(自交编号为L97-15-48-(11)-12)为父本杂交育成,1998~1999年在我所进行品种比较试验,2001~2002年在内蒙古巴盟、呼和浩特、赤峰等5个区域试验点进行多点生产试验,2003年通过内蒙古自治区农作物品种审定委员会品种审定,命名为蒙甜2号. 相似文献
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鄂西瓜17是湖北省农业科学院经济作物研究所以自交系W2-203作母本,自交系W2-25-6作父本配组而成的优质有籽西瓜新品种。早熟,果实发育天数30 d左右。果实圆形,果皮绿色覆深绿色锯齿条带,皮厚0.9 cm左右,较硬,不易裂果。瓜瓤大红色,中心可溶性固形物含量12%左右,边缘可溶性固形物含量9%左右。单果质量4 kg左右,产量2 500 kg/667 m2左右。2010-2012年参加了湖北省西瓜品种区域试验,2013年通过了湖北省农作物品种审定委员会的现场考察。2014年通过湖北省品种审定。 相似文献
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抗寒优质李新品种——牡红甜李 总被引:2,自引:0,他引:2
牡红甜李是1982年以巴彦大红袍为母本,七月红为父本杂交育成的早熟李新品种。经多年观察及区域试验和生产试栽,该品种具有抗寒、优质等特点,1996年1月通过黑龙江省农作物品种审定委员会审定并命名。目前在黑龙江、吉林、辽宁、内蒙古、新疆等地推广栽植近30万株。 相似文献
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西瓜新品种菊城20早编号E1105,母本是开封25(开封3号与圳后5—5杂交后代),父本是开封43(美国引进材料与小花狐狸杂交后代),2001年杂交,2002年进行组合鉴定,2003-2007年进行比较试验、区域试验、生产试验,2008年4月通过河南省农作物品种审定委员会审定。 相似文献
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1园地选择1.1地势选择地势高、不易积水、地下水位较低的地块,一般雨季地下水位不得超过80~100cm。平原地,最好选在村庄的南面,或北端有防护林;山丘地,选择背风向阳的下半坡。这两种地块,既能防止风害,又能使樱桃在春季得到充足的光照和较多的热量,能使果实早熟、整齐、着色好、品质佳。不要选择山沟里的坝头地,虽然坝头地土质好,但早春易遭霜冻。1.2排灌条件樱桃既怕旱,又怕涝。园地周围要有水源,也要有排水设施,以便干旱时能及时浇水,雨涝季节能较好地排涝。一般北方春季干旱少雨,尤其在果实膨大期间,如果干旱缺水,果个较小。再者,樱桃根… 相似文献
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Influence of agricultural landscape structure on a Southern High Plains,USA, amphibian assemblage 总被引:2,自引:0,他引:2
Landscape structure can influence demographics of spatially structured populations, particularly less vagile organisms such as amphibians. We examined the influence of agricultural landscape structure on community composition and relative abundance of the 4 most common amphibians in the Southern High Plains of central USA. Amphibian populations were monitored using pitfall traps and drift fence at 16 playa wetlands (8 playas/year) in 1999 and 2000. We quantified landscape structure surrounding each playa via estimating 13 spatial metrics that indexed playa isolation and inter-playa landscape complexity. Multivariate ordination and univariate correlations and regressions indicated that landscape structure was associated with community composition and relative abundance for 2 of the 4 amphibians. Spadefoots (Spea multiplicata, S. bombifrons) generally were positively associated with decreasing inter-playa distance and increasing inter-playa landscape complexity. Great Plains toads (Bufo cognatus) and barred tiger salamanders (Ambystoma tigrinum mavortium) usually were negatively associated with spadefoots but not influenced by landscape structure. Composition and relative abundance patterns were related to amphibian body size, which can influence species vagility and perception to landscape permeability. Spatial separation of these species in the multivariate ordination also may have been a consequence of differential competitive ability among species. These results suggest agricultural landscape structure may influence abundance and composition of spatially structured amphibian populations. This also is the first applied documentation that inter-patch landscape complexity can affect intra-patch community composition of amphibians as predicted by metapopulation theory. In the Southern High Plains, landscape complexity is positively associated with agricultural cultivation. Agricultural cultivation increases sedimentation, decreases hydroperiod, alters amphibian community dynamics, and negatively impacts postmetamorphic body size of amphibians in playa wetlands. Thus, conservation efforts should focus on preserving or restoring native landscape structure, hydroperiod, and connectivity among playas to maintain native amphibian populations and historic inter-playa movement. 相似文献
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在明确含糖量高、适应性广、抗病性强的长远育种目标的前提下,从1981年开始大力加强亲本选育,采用不同生态型材料、多亲杂交、异地加代选育,前后经13年17代育成母本mT-8,经11年16代育成父本mT-1,1992~1994年配组合和组合筛选,选育出玉金香。经1995~1996年品比试验和后来参加的国家品种试验,结果表明该品种已基本达到育种目标。主要特性为:早熟种,全生育期85天,果实发育期38天;植株生长稳健,叶片小,节间与叶柄短;果实圆形,果皮乳黄白色,偶有网纹,果肉白色,肉细汁多,香味浓郁,中心可溶性固形物含量16%~18%;平均单果重0.7~1kg,一般667m2产量3000~3500kg。田间表现抗白粉病、霜霉病、疫霉病。1996年开始进行省内外生产示范和推广工作,经多年生产实践证明:玉金香是1个适应性很广的优质、高糖、早熟厚皮甜瓜品种。目前推广面积较大的有甘肃、北京、宁夏、内蒙古、吉林、云南、四川、陕西、山东9个省(区)、市,其中在甘肃、云南、宁夏已成为主栽品种。 相似文献