甘蓝型双低隐性核不育杂交种沪油杂1号的选育

沪油杂1号(原编号SH-19)是利用隐性上位互作核雄性不育系20118A育成的甘蓝型双低杂交油菜品种.20118A的育性由2对隐性重叠基因和1对隐性上位基因控制,基因型为aabbRfRf,临保系的基因型为aabbrfrf,恢复系的基因型为AA__或__BB__.沪油杂1号种子含油量42.43%,芥酸含量0.62%,硫甙含量24.23μmol/g.在上海市油菜区域试验中平均产量2 243.3kg/hm2,比双高对照汇油50增产11.9%,比双低对照沪油15增产3.8%;在上海市油菜生产试验中平均产量2 244.0kg/hm2,分别比对照汇油50增产33.6%,比对照沪油15增产15.9%.     

绵羊QTL定位的研究进展

本文综述了绵羊的重要经济性状QTL定位的方法和进展，并提出存在问题和展望。     

不同稀释液对藏獒精液保存效果的影响

比较了8种稀释液在藏獒精液冷冻保存和低、常温保存(5 ℃,10 ℃,15 ℃,20 ℃)的效果.结果表明:2号和8号稀释液在冷冻保存时效果最好,精子活力和顶体完整率分别达到0.40和49%,与对照组相比差异显著(P<0.05).在藏獒的低温、常温保存试验中,所有稀释液在15 ℃时保存时间最长,综合考虑,7号液保存效果最好;在15℃时精子平均存活时间为103 h,显著高于对照组和其它稀释液(P<0.05).     

优质高产紫花苜蓿新品种CW 400

CW 400系宁夏固原市农科所2000年从美国西海岸种子公司引入,通过多年多点试验、鉴定,2006年经宁夏回族自治区农作物品种审定委员会审定推广,适宜干旱半干旱地区种植.     

棉花不同时期去叶源对库源关系影响的初步研究

通过对棉花不同时期去主茎叶、叶枝叶、果枝叶和全部叶片的研究,初步探讨了棉花叶源对库的影响.结果表明:无论蕾期还是盛铃期,叶片是棉花光合产物的主要来源,没有叶片棉花就不能正常生长,也很难保证其产量;不同部位的叶片中,主茎叶的作用显著,蕾期去主茎叶后株高日增长量减少0.5 cm以上,干物质积累明显下降,盛铃期则导致棉铃大量脱落,成铃平均减少2个以上;去果枝叶的作用相对较小,去叶枝叶几乎无影响.     

运用模糊数学和灰色系统理论分析评价夏播花生区试品种

运用模糊数学和灰色系统理论，对2007年河南省夏播花生区试品种进行了多因素综合评价和分析，结果表明：周花4号评价指标是0．7089，综合表现最优；其次是W9847—1—3—4—1，其综合评价指标是0．6352；豫花6号评价指标是0．3630，综合表现最差。此结果与试验地实际表现基本相一致。     

弘扬茶文化 促进社会主义和谐社会建设

中国是茶的故乡,是世界上茶历史最悠久、茶资源最丰富、茶文化最深厚的国家.茶在中国始终扮演着社会交往的最佳礼物和媒介,是人与人之间友谊的桥梁.茶文化的本质是"和谐文化",它引导人们与自然和谐相处,启示人们在人与人的关系上,要彼此尊重,加强交流,启发人们感悟身心的统一.大力弘扬茶文化精神,是建设和谐文化的一笔重要资源,是构建和谐社会的重要载体.     

着床与生长因子的关系研究进展

论述了着床的生理机制。同时介绍了EGF、TGF、KGF和PDGF等生长因子对着床的调控作用。     

Effects of dietary vitamin K levels on bone quality in broilers.

This study was conducted to evaluate the effects of dietary vitamin K (menadione) on bone quality in cage-raised broilers. Three hundred and sixty male broilers were randomly allotted to one of six treatments, with six replicate pens per treatment and 10 chicks per pen. Broilers were fed one of six diets including a control diet or the control diet plus graded levels of vitamin K (0.5 mg/kg, 2 mg/kg, 8 mg/kg, 32 mg/kg and 128 mg/kg). Water and feed were provided ad libitum during the 7-week experimental period. Results indicated that vitamin K supplementation of broilers diets significantly effected bone quality and feed efficiency. The treatment containing vitamin K at 8 mg/kg improved growth performance (during weeks 6-7) and bone quality (during weeks 0-3). In our study, hydroxyapatite binding capacity of serum osteocalcin (during weeks 0-3), bone breaking strength, bone flexibility, bone ash weight increased linearly (P < 0.05) and bone mineral density, bone mineral content increased quadratically (P < 0.05) with increasing supplementation of vitamin K. In conclusion, to gain optimum bone quality and broiler performance, our studies suggest that the concentration of vitamin K in broilers diets should be 8 mg/kg, 2 mg/kg, and 2 mg/kg, for the starter, grower and finisher phases, respectively. Furthermore, it was shown that the starter period is an important phase for improving bone quality. In addition, this study validated the mechanism of vitamin K effects on bone quality. Vitamin K boosts the carboxylation of osteocalcin and decreases the concentration of serum under-carboxylated osteocalcin enhancing hydroxyapatite binding capacity of serum osteocalcin and improving bone quality.     

云南省宜良县大型真菌调查(续)

94 .黄白粘盖牛肝菌Suillusplacidus (Bonorder)Sing .(食、毒 )95 .亚金黄粘盖牛肝菌S .subaureus (Perk)Snell(食 ?)96 .白短柄粘盖牛肝菌S .albidipes (Peck)Sing .(食 ?)97.腺点柄粘盖牛肝菌S .landulospesA .H .SmithetThiers (食 ?)98.黄粘盖牛肝菌S .lavidus (Fr .)Sing .(食 ?)99.暗黄粘盖牛肝菌S .plorans (Roll)Sing .(食 ?)10 0 .黑盖粉孢牛肝菌Tylopilusalboater (Schw .)Murr.(食 )10 1.白粉孢牛肝菌T .albofarinaceus (Chiu)Tai(食 )10 2 .锈盖粉孢牛肝菌T .ballouii (Peck)Sing .(食 ?)10 3.紫盖粉孢牛肝菌T .ex…