海南甘蔗育种场开展基础杂交培育新型亲本续报

本文报道了海南甘蔗育种场自1995年以来开展基础杂交，培育新种质亲本的情况。在研究甘蔗新种质种性基础上，选择基础杂交亲本，应用光周期诱导技术，促进难花亲本抽穗开花，配置甘蔗属内种间，及甘蔗属与蔗等属属间的远缘杂交，培育较突出的杂种（F1）34新品系，及一批待选育种材料。初步回交（BC1）证明这些基交新品系可供我国新世纪甘蔗育种作为经济杂交亲本，以扩大当前甘蔗遗传育种基础．

近年海南甘蔗育种场开展基础杂交培育新型亲本材料的初报

本文报道海南甘蔗育种场近年来利用新种质、新技术开展基础杂交，培育新型杂本（或育种材料）的情况。这些基础条交后代有甘蔗属的种间杂种，也有甘蔗属与蔗茅属的居间杂种。突出的后代品系作重点介绍，并将于短期内投入经济杂交，为我国育种界所利用，以扩大当今甘蔗遗传基础，提高甘蔗新品种素质。

云瑞甘蔗创新亲本抗旱性综合评价

甘蔗基础杂交以种质创新为主,是甘蔗育种的基础和前提。为建立规范的云瑞甘蔗亲本抗旱性鉴定方法,并对所创造的具有新血缘的种质资源进行抗旱性评价。以36份云瑞创新亲本为研究材料,设置正常供水和水分胁迫两个处理,测定水胁迫下甘蔗叶片质膜透性、丙二醛、脯氨酸、叶绿素荧光参数等12个性状指标,结合抗旱系数DC、综合抗旱系数CDC、加权抗旱系数WDC、主成分、隶属函数、聚类以及灰色关联度和逐步回归分析方法,对其抗旱性进行综合评价并筛选适宜指标。结果表明:干旱对甘蔗亲本各指标有极显著影响,配对处理t检验各指标处理间P=0.0001,所选指标对干旱胁迫响应较敏感;主成分分析表明7个主成分可代表甘蔗亲本抗旱性89.2686%的原始数据信息量,可概括为光合作用因子、水分利用因子和生理调控因子3类;系统聚类分析将36份亲本材料划分为高度抗旱型(Ⅰ)、中高度抗旱型(Ⅱ)、中度抗旱型(Ⅲ)、低度抗旱型(Ⅳ)和敏感型(Ⅴ)5类,所占比例分别为25%、25%、25%、13.9%、11.1%,筛选出云瑞14-195、云瑞15-88、云瑞11-98、云瑞11-256、云瑞15-158、云瑞14-78、云瑞13-26、云瑞12-137和云瑞15-73共9份抗旱材料;通过灰色关联度分析和逐步回归分析,进一步明确了质膜透性、丙二醛、脯氨酸、自由水/束缚水等是甘蔗抗旱性评价的关键指标,可有效评价甘蔗种质抗旱性。为建立云瑞甘蔗亲本规范的抗旱鉴定体系,大规模筛选抗旱甘蔗种质资源提供科学依据。

Hybrid supercapacitor based on polyaniline doped with lithium salt and activated carbon electrodes

Polyaniline（PANI） nanofiber was synthesized by interfacial polymerization utilizing the interface between HC1 and CCl4. The hybrid type supercapacitors （PLi/C） based on Li-doping polyaniline and activated carbon electrode were fabricated and compared with the redox type capacitors （PLi/PLi） based on two uniformly Li-doping polyaniline electrodes. The electrochemical performances of the two types of supercapacitors were characterized in non-aqueous electrolyte. PLi/C supercapacitors have a wider effective energy storage potential range and a higher upper potential. At the same time, the PLi/C supercapacitor exhibits a specific capacity of 120.93 F/g at initial discharge and retains 80% after 500 cycles. The ohmic internal resistance （REs） of PLi/C supercapacitor is 5.0 Ω, which is smaller than that of PLi/PLi capacitor （5.5 Ω）. Moreover, it can be seen that EtgNBF4 organic solution is more suitable for using as organic electrolyte of PLi/C capacitor compared with organic solution containing LiPFr.

Hybridizing artificial bee colony with biogeography-based optimization for constrained mechanical design problems

A novel hybrid algorithm named ABC-BBO, which integrates artificial bee colony(ABC) algorithm with biogeography-based optimization(BBO) algorithm, is proposed to solve constrained mechanical design problems. ABC-BBO combined the exploration of ABC algorithm with the exploitation of BBO algorithm effectively, and hence it can generate the promising candidate individuals. The proposed hybrid algorithm speeds up the convergence and improves the algorithm's performance. Several benchmark test functions and mechanical design problems are applied to verifying the effects of these improvements and it is demonstrated that the performance of this proposed ABC-BBO is superior to or at least highly competitive with other population-based optimization approaches.

A traffic model of optical networks based on time-space complexity and traffic grooming

This paper researched the traffic of optical networks in time-space complexity,proposed a novel traf-fic model for complex optical networks based on traffic grooming,designed a traffic generator GTS(gener-ator based on time and space)with 'centralized+distributed' idea,and then made a simulation in Clanguage.Experiments results show that GTS can produce the virtual network topology which can changedynamically with the characteristic of scaling-free network.GTS can also groom the different traffic andtrigger them under real-time or scheduling mechanisms,generating different optical connections.Thistraffic model is convenient for the simulation of optical networks considering the traffic complexity.