网纹甜瓜新品种‘碧龙’     

吕敬刚  李秀秀  彭冬秀  赵宗武 《园艺学报》2007,34(4):1069-1069

 ‘碧龙’为中晚熟甜瓜一代杂种, 植株长势中等, 叶色浓绿, 叶片中等, 节间较短, 果实成熟期48 d, 单果质量1.6 kg以上, 果皮墨绿色, 果面密覆网纹, 果肉碧绿色, 肉厚3.8 cm, 脆质, 风味好, 成熟后可溶性固形物含量17% , 果实耐贮性好, 抗白粉病、霜霉病, 适于春季保护地栽培。  相似文献   

应用灰色系统理论综合评价萝卜新组合     

任喜波 《北方园艺》2007,(4):36-38

用灰色系统理论中关联度分析的基本原理和方法,对15个萝卜杂交组合10个主要农艺性状进行了综合描述,较为全面、客观地评价了参试组合的优劣.结果表明：在等权关联度排序和加权关联度排序相比的结果来看,加权关联度排序更能反映品种的多个农艺性状的实际表现;X12,X13,X14和X5加权关联度排序上均居于首要位置,农艺性状表现突出.  相似文献   

N、P、K肥配施对杂交甜高梁草产量及效益的影响   总被引：6，自引：0，他引：6  

郑庆福  杨恒山  刘晶  夏成强  石晶 《中国草地学报》2007,29(2):65-69

应用D-最优化设计研究N、P、K肥配施与杂交甜高粱品种甜格雷兹饲草产量及效益的关系，结果表明：N肥对草产量和效益影响最大；在较高N水平下，P、K间交互效应均利于甜格雷兹的增产增收；其最优施肥方案为N150．53kg／hm^2、P20550．82kg／hm^2、K2075．71kg／hm^2，草产量为112．09t／hm^2，获得效益20．902×10^3元／hm^2。  相似文献   

根据蚁蚕形体特征鉴别蚕种杂交率方法与生产用方法的准确性比较     

姚新弟  张三姝  陆向前  张庆芳  周仲华  蔡玉根  陶涛  陆水根  姚李军  钟伯雄 《蚕桑通报》2007,38(2):16-18

检验蚕种杂交率是蚕种质量检验中的重要工作之一，但生产上还没有一种理想的方法，作者研究发明了一种根据蚁蚕形体特征判别纯种和杂交种、结合抽样推断理论检验蚕种杂交率的方法。本文通过生产性试验，比较了这种判别检验方法与目前生产上应用的大蚕期或结茧期判别方法的判别结果的一致性，t检验结果表明2种方法判别结果没有显著差异，表明该方法具有生产实用性。  相似文献   

紫色辣椒新品种‘紫燕1号’     

董言香  张其安  方凌  江海坤  严从生 《园艺学报》2007,34(6):1595-1595

 ‘紫燕 1 号’为辣味中等彩色辣椒一代杂种。利用国内优良自交系与从国外紫色甜椒多代自交优良株系杂交而成。该品种早熟, 从定植至采收商品椒约42 d; 抗性强, 耐低温弱光; 果实牛角形, 鲜果紫色, 生物学成熟果深红色, 鲜椒产量39 000～45 000kg/hm²。适于春早熟和秋延后保护地栽培。  相似文献   

茄子新品种‘川茄2号’     

房超  李跃建  刘独臣  刘小俊 《园艺学报》2007,34(5):1332-1332

 ‘川茄2号’茄子为杂种一代，生长势旺盛，果实长棒形，平均单果质量120～130 g。果皮紫黑色，有光泽。果肉月白色，籽少，商品性好。早熟。早期产量高，总产量一般为4 300 kg/hm²。耐寒性较强，适宜露地和保护地早熟栽培。  相似文献   

小白菜新品种京绿7号的选育     

赵岫云  徐家炳  张凤兰  余阳俊  张德双  卢桂香 《中国蔬菜》2007,1(11):33-34

京绿7号是由来源于上海和北京的两个地方品种选择的自交不亲和系Y134和Y105杂交而成。植株半直立,株高24cm,开展度37cm;叶深绿色、有光泽,叶面稍皱,叶柄绿色、有光泽、宽5.7cm、厚1.0cm;单株质量0.25kg左右,每667m2产量2400kg左右;高抗黑腐病,抗病毒病、黑斑病,晚抽薹性极强,适宜北方地区冬春季栽培。  相似文献   

Fragrance heritability in Hybrid Tea roses     

Magali Cherri-Martin  Frédéric Jullien  Philippe Heizmann  Sylvie Baudino 《Scientia Horticulturae》2007

Most of the Hybrid Tea roses that are sold as cut flowers are non-scented, despite the long-standing interest of the perfume industry to rose scent. In the absence of comprehensive knowledge on the genetic and biochemistry of volatile biosynthesis in roses, we decided to characterize a Hybrid Tea progeny obtained from parents that emit very different scents. First, we identified the 11 most abundant volatile compounds synthesized by the progeny, and a short review is given for each one that describes their occurrence in the genus Rosa, in the parents and the studied progeny. We have then used statistical analysis on the distribution of volatiles among individual progeny members to unveil the laws of segregation of the scent traits in this cross. As a general rule, the quantity and quality of volatile compounds was lower in the progeny members. Variations in scent quality were mostly linked to the quantity of monoterpenes that was present. Offsprings emitting a pleasant fragrance were, in practice, found to be rare.  相似文献   

Diploid female gametes induced by colchicine in Oriental lilies   总被引：1，自引：0，他引：1  

Hongzhi Wu  Sixiang Zheng  Yueqiu He  Guijun Yan  Yufen Bi  Youyong Zhu 《Scientia Horticulturae》2007

The young flower buds of diploid Oriental cultivars: ‘Con. Amore’ and ‘Acapulco’ (Lilium) were treated with 0.02, 0.05, 0.1, and 0.2% colchicine to induce diploid egg (female gamete). The treated young buds between the two cultivars were crossed reciprocally as female parents with normal pollen respectively. The polyploid plants were identified by measuring stoma size and chromosome number. The results showed: that triploid progenies could be obtained through this way, and the fact that the treated young flower buds were successfully used as female parents indicated the formation of 2n or 2x egg cells. The above results implied that polyploidization by artificially induced diploid female gametes could be a powerful method to create novel variations in the breeding of Oriental lilies.  相似文献   

不同复种方式下作物的粗蛋白和可消化干物质总产量比较   总被引：1，自引：0，他引：1  

钟小仙  顾洪如  江海东  曹卫星 《草业科学》2007,24(4):75-78

在南京对6种不同复种方式下作物的营养物质产量进行了比较研究,结果表明:多花黑麦草Lolium multiflorum粗蛋白总产量和可消化干物质总产量分别是小麦Triticum eastivum的1.45倍和1.26倍;杂交狼尾草Pennisetum americanum×P.purpureum粗蛋白总产量和可消化干物质总产量平均值分别是水稻Oryza sativa的2.06倍和1.61倍;6种复种方式中,粗蛋白总产量和可消化干物质总产量以多花黑麦草-杂交狼尾草为最高,黑麦Secale cereal-杂交狼尾草其次.集约农区发展草食性畜禽养殖业以二季均种植牧草效率较高.  相似文献