tailieunhanh - Inheritance of grain yield in a half diallel maize population

Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. | Turk J Agric For 28 (2004) 239-244 © TÜB‹TAK Inheritance of Grain Yield in a Half-Diallel Maize Population Ayd›n ÜNAY*, Hüseyin BASAL, Cahit KONAK Adnan Menderes University, Agricultural Faculty, Field Crops Dept., Ayd›n - TURKEY Received: Abstract: Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. The grain yield was under the dominance gene effect. The parents W 552 and DNB were considered suitable according to their yield capacities and general combining ability effects. The midparent heterosis values ranged from ( x DNB) to (ALKD 222 x A 632) whereas the useful heterosis values varied between – (A 619 x A 632) and (N 7A x ALKD 90-1), and only 9 crosses had higher grain yields than that of the check variety. Of these crosses, N 7A x ALKD 90-1, N 7A x DNB and N 7A x IDRN Cornell, were considered promising hybrids. Key Words: Maize, diallel analysis, combining ability, heterotic effect Yar›m Diallel M›s›r Populasyonunda Tane Veriminin Kal›t›m› Özet: Dokuz kendilenmifl m›s›r hatt› ve bunlar›n yar›m diallel melezlenmesi sonucu oluflturulan populasyonda dane verimine iliflkin kal›t›m parametreleri, heterosis ve uyuflma yetenekleri incelenmifltir. Genel ve özel uyuflma yetene¤i etkileri yönünden genotipler aras›ndaki farkl›l›¤›n istatistiki olarak önemli oldu¤u saptanm›flt›r. M›s›rda dane veriminin dominant genlerin etkisi alt›nda oldu¤u bulunmufltur. Verim ortalamas› ve genel uyuflma yetene¤i etkileri dikkate al›nd›¤›nda; W 552ve DNB hatlar›n›n melez m›s›r ›slah› için uygun anaçlar oldu¤u belirlenmifltir. Heterosis de¤erlerinin % ( x DNB) ve % (ALKD 222 x A 632) aras›nda de¤iflti¤i, buna karfl›n kullan›labilir heterosisin % – (A 619 x A 632), ve % (N 7A x ALKD 90-1) aras›nda de¤iflti¤i

• Nông nghiệp
• Maize Zea mays L
• Diallel analysis
• Combining ability
• Heterotic effect
• General combining ability
• Different levels of nutrients
• Dates of sowing
• Zea mays L
• Maize crop (Zea mays L
• Growth and yield of maize crop
• Mean performance
• Analysis of Variance
• Twelve characters studied in maize
• Maize (Zea mays L )
• Genetic advance
• Quality protein maize
• Quantitative and quality traits
• Quality traits
• Seed treatment
• P fraction
• P rich acid soils
• Fertilizer P additions on available P
• Irrigation regime and nitrogen level
• Nitrogen level on yield
• Yield attributes
• Summer Maize
• Human urine
• Cropping system
• Toria (Brassica campestris L ) cropping system
• Economics under Maize
• Growth stages
• Hybrid maize
• Prospecting endophytic bacterial colonization
• Potential plant growth
• Attributes in hybrid maize
• Hybrid maize (Zea mays L
• Varieties and maize
• Growth parameters
• Yield of maize varieties
• Maize varieties (Zea mays L )
• Tribal hills area
• Maize hybrids (Zea mays L )
• Performance evaluation of maize hybrids
• Performance evaluation
• Maize hybrids
• Integrated nitrogen management
• Yield and hybrid maize
• Hybrid maize (Zea mays L )
• Soil health and maize
• Economics profitability of organic fertilizer
• Organic fertilizer of maize
• Vermi compost on soil health
• Zero tillage
• Date of sowing
• Maize nutrient content
• Maize (Zea mays L
• Nutrient uptake and yield of maize
• Zea mays
• Gamma irradiation
• Chromosomal anomalies
• Gametic cells of Zea mays L
• Genetic repairing
• Leaf extracts
• Mesua ferrea
• Schima wallichi
• Seedling growth of maize
• Molecular cloning of stress induced genes
• Stress induced genes of maize
• PCR select cDNA subtraction technique
• Transcriptional control of stressregulated genes
• Single cross hybrids of maize
• Specific combining ability studies
• Non additive gene action controlling
• MgO nano particle
• Magnesium oxide nano particles effects
• Utilization of soil phosphorus
• Soil phosphorus by maize
• Reproductive growth
• Vegetative development
• Net photosynthetic rate in six maize
• Six maize (Zea mays L
• Crop phenological phase based
• Nutrient omission on growth
• Profitability of maize
• Maize (Zea mays)
• wheat (Triticum aestvum L)
• Genetic analysis
• Heat adaptive traits
• Tropical maize (Zea mays L
• Tropical maize
• Grain yield
• Prediction and validation
• Validation of three cross hybrids
• Three cross hybrids in maize
• Breeding programme
• Survey on natural occurrence
• Natural occurrence
• ) ecosystem
• Maize and phenophase
• Plant growth
• Hybrid seed
• Environmental factors and seasons
• Different genotypes of maize
• Sowing methodology
• Diverse hybrid maize
• Two contrasting environments
• Kharif season
• Performance of maize hybrids
• Different sowing windows
• Yield parameters significantly