云南花生种质丰产性和品质性状的改良潜力

利用改良潜力公式推算云南省现有的 2 66份花生栽培种种质 ,花生的丰产性改良潜力大于品质性状的改良潜力。在花生种质丰产性改良潜力中 ,单株生产力改良潜力 >单株果数改良潜力 >百果重改良潜力。在品质性状的改良潜力中 ,油酸 /亚油酸比的改良潜力 >油酸的改良潜力 >亚油酸的改良潜力 >含油量的改良潜力。不同类型间改良潜力存在一定的差异     

Fatty acid and amino acid composition of groundnut mutants

Groundnut mutants TG-8, TG-9, TG-17 and TG-18 induced by -irradiation differed in fatty acid composition from their parent Spanish Improved. All the mutants had lower linoleic and higher oleic than Spanish Improved. TG-18 had lower oleic and higher linoleic as compared with TG-8, TG-9 and TG-17. Palmitic acid in TG-18 and Spanish Improved was higher than other mutants. Oil stability as judged by oleic to linoleic ratio was substantially higher for mutants as compared with their parent.Amino acid composition of groundnut mutant proteins differed from Spanish Improved. In general mutants had higher contents of lysine, histidine, proline, phenylalanine and tryptophan and lower contents of threonine, serine and methionine. The first limiting amino acid was tryptophan in Spanish Improved, threonine in TG-8, TG-9 and TG-17 and Valine in TG-18. Essential amino acid contents for all except methionine, valine and threonine per grain flour were higher in all the mutants as compared with their parent.     

Inheritance of iron deficiency chlorosis resistance in groundnut (Arachis hypogaea L.)

Iron-deficiency chlorosis (IDC) is an important abiotic constraint affecting the growth and yield of groundnut in calcareous and alkaline soils worldwide. The present study investigated the inheritance of IDC resistance among four straight crosses of groundnut involving four IDC susceptible cultivars as females and a common IDC resistant male parent. The F₁'s of all the four crosses were resistant to IDC indicating the dominant nature of IDC resistance. The F₂'s of all the four crosses showed a good fit to the ratio of 15 (IDC resistant): 1 (IDC susceptible) and their behavior among the F₃'s was as per the expected ratio of 7:4:4:1. The IDC resistance in groundnut is under the control of duplicate dominant genes wherein, the presence of a dominant allele at either of the loci results in IDC resistance, while duplicate recessive results in IDC susceptibility. This information would facilitate development of IDC resistant cultivars of groundnut.     

Sulfur nutrition for enhancing rainfed groundnut productivity in typical alfisol of semi-arid regions in India

The field experiments were conducted for three consecutive years from 2011 to 2014 to evaluate the influence of graded levels of gypsum as a source of sulfur and different times of application on soil fertility and yield parameters and yield of groundnut (TMV 7) under rainfed condition at Dryland Agricultural Research Station, Chettinad, Tamil Nadu, India. It is observed that sulfur nutrition significantly influenced growth, yield attributing characters and yield over control. Sulfur nutrition through gypsum as a source 400 kg ha^?1 in split mode viz., 200 kg as basal and 200 kg as top dressing during receipt of rains recorded highest plant height, more number of filled pods per plant, higher values for 100 pod weight, 100 kernel weight, pod yield and haulm yield. Split application of gypsum 400 kg ha^?1 has increased pod yield to the tune of 31, 21 and 36 percent during 2011, 2012 and 2013 respectively.     

15%毒死蜱颗粒剂(乐斯本)防治花生蛴螬药效分析

为了筛选出防治花生蛴螬高效、低残留药剂,对15%毒死蜱颗粒剂(乐斯本)防治花生蛴螬进行了药效对比及用量试验,发现1 000、1 500、2 000g/667m2防效高于30%毒死蜱.辛硫磷乳油(邦得)和辛硫磷灌墩处理,荚果被害率最低,分别为10.84%、9.78%、8.86%;按防虫效果比较,15%毒死蜱颗粒剂(乐斯本)1 500、2 000g/667m2的防效与30%毒死蜱.辛硫磷乳油灌墩处理效果均达90%以上,比辛硫磷灌墩处理分别提高39.91和40.37个百分点。15%毒死蜱颗粒剂(乐斯本)1 000g/667m2即可达到理想的防治效果,且成本最低,花生荚果产量最高,纯增值495.1元,比辛硫磷和邦得纯增值分别提高147.6元和8.6元。因此15%毒死蜱颗粒剂(乐斯本)可替代高毒农药,一次施药即可控制蛴螬的危害,可在生产上大面积推广应用。     

福建莆田凤腾龙滨海生态旅游度假区总体规划

通过对龙凤文化的延伸,以及与当地的妈祖文化结合,形成风腾龙跃、龙凤吉祥的意象,使凤腾龙滨海生态旅游度假区规划成为自然景观优美、文化内涵深刻、休闲度假设施丰富齐伞的国内外旅游度假胜地,使该地区形成集进香朝观、休闲度假、民俗风情、水上运动于一体的旅游度假新格局。