我首批“太空牡丹”呈现“亲本性”

我国首批200粒“太空牡丹”种子自2002年栽植于山东菏泽百花园后．目前共存活56株活苗，其中15株“太空牡丹”呈现明显的“亲本性”特点。

室内养殖条件下中华绒螯蟹雄性个体的生殖潜力

为评判中华绒螯蟹育苗工作亲本投放性比（♀∶♂=2～3∶1）的合理性,通过室内连续交配实验,对雄性个体的生殖潜力进行了研究。结果显示,雄蟹具备完成3次连续交配活动的生殖潜力;个体丧失交配能力前,贡献了超过60%的精子（≥6×109个）等雄性产物;多次交配活动并没有对雌蟹的个体繁殖力产生影响;雌蟹抱卵后,纳精囊亦没有出现明显的偏差;实验条件和基地育苗池个体纳精囊内均还存有一定数量的精子,表明雄蟹提供的雄性产物可以满足雌蟹受精的需要,因此,该性比在实际育苗生产中具有一定合理性,而作为亲本雄蟹的大规格及自身的生殖策略则可能是中华绒螯蟹避免精子限制发生的重要原因,其潜在的精卵比达（1.59～10.86）×10～3∶1。此外,研究成果揭示这个被广泛采用的亲本性比存在进一步优化的可能,可以提升至4∶1。

少花桂的繁殖及后代稳定性

少花桂（Cinnamomumpauciflorum）是种富含黄樟油索的植物，种子发芽率为52－73％，插条成活率为50－75％，它们的后代保持着亲本的特性，主要成分黄樟油素含量为97－99％。

High-yield Seed Production Techniques of Late Japonica Hybrid Rice Tongyoujing 1

The differences in growth period and seeding to heading duration of both parents of Tongyoujing 1 are 4-6 and 3-5 d, respectively. Plant height of the male parent was 6-8 cm higher than that of the female parent, and blooming time of the male parent was 30-60 min earlier than that of the female parent. The seed pro-duction technology points of Tongyoujing 1 include appropriate seeding （the differ-ence in sowing period of both parents is 3-5 d）, timely transplanting, reasonable layout （ratio of rows between both parents is 2：（6-8））, strengthening variety isolation, scientific fertilizer and water management （high fertilization for male parent and ade-quate fertilization for female parent）, reasonably regulating flowering period （to pro-mote flower synchronization）, artificial pollination （to improve outcrossing rate）, paying attention to miscel aneous plant removal and pest control and timely harvest.

Pedigree and Trait Analysis of Soybean Varieties Registered in Henan Province

To elucidate the genetic relationship of the soybean varieties registered in Henan province, we analyzed the pedigrees, the major agronomic traits, and the eco- nomic traits of 74 soybean varieties registered in Henan province from 1985 to 2012, with reference to experience and technologies beneficial to breeding. The resuits indicated that these varieties originated from 113 parents, and positive correla- tion between the yield and the number of original parents was significant. In the major agronomic traits, the growth stage was about 106 days with relatively small variation, while the final height varied largely among these varieties. Among the fac- tore affecting the final yield, the pod number per plant exhibited an increasing trend, while the variation of 100-grain weight was relatively small. More than 50% of the 113 original parents came from Henan Province and its neighbor provinces, and the genetic relationship among the registered varieties was too close. The rational criteria of yield components of soybean varieties in Henan Province should be as fol- lows： the pod number per plant was about 48. 6, with 100-grain weight ranging from 17.55 g to 21.80 g.

Analysis on Major Agronomic Traits and Yield of Huayu Series of Peanut Cultivars under Mulched Drip Irrigation

[Objective] This study aimed to investigate the appearance of major agronomic traits and yield potential of Huayu series of peanut cultivars under the condition of mulched drip irrigation, so as to provide core parent materials for new peanut cultivar breeding in Xinjiang during Thirteenth Five-Year Plan. [Method] A total of 16 peanut cultivars of Huayu series were studied systematically by field experiment and laboratory analysis. In addition, the main stem height, lateral branch length, pod number per plant, 100-pod weight, 100-kernel weight, pod length, pod width and yield of different peanut cultivar were compared. [Result]Under the condition of mulched drip irrigation, the appearance of major agronomic traits of peanut cultivars in Xinjiang was better than that in Shandong areas. In Xinjiang, the yields of the peanut cultivars were increased in varying degrees. However,there were some differences in appearance of major agronomic traits, as well as yield, among different peanut cultivars. Among all the peanut cultivars, the single-plant productivities of Huayu 22, Huayu 28 and Huayu 50 were higher than those of the other cultivars, and the yields of Huayu 33 and Huayu 50 were higher than those of the other cultivars. Meanwhile, the late two cultivars' comprehensive traits were excellent. [Conclusion] In the high-yielding breeding of peanut in Xinjiang, Huayu 33 and Huayu50 can be used as core parent materials. Under the condition of mulched drip irrigation, their yield potential can be further explored.

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2002年9月植于菏泽百花园的“太空牡丹”目前存活56棵，其中15棵呈现亲本性特点。

国内首批太空牡丹有望2007年开花

我国首批200粒”太空牡丹”种子自2002年种在山东菏泽百花园出苗后，目前共存活56株，其中15株呈现明显的”亲本性”特点。