A Study on Genetic Advance and Heritability for Quantitative Traits in Cotton (Gossypium hirsutum L.)

Year 2020, Volume: 17 Issue: 1, 81 - 84, 06.07.2020

Şerife Balcı Volkan Mehmet Çınar Aydın Ünay

https://doi.org/10.25308/aduziraat.709514

Cited By: 4

Abstract

The experiment was laid to estimate heritability, genetic correlation and genetic advance for seed cotton yield, yield components and fiber quality in F1 populations by line x tester mating design. Seed index (0.789), ginning outturn (0.758), boll weight (0.644), days to first boll opening (0.635) and boll number (0.617) exhibited the high heritability broad sense. The significant and positive genotypic correlations with seed cotton yield recorded in boll number, boll weight, fiber strength, sympodia branch number, days to first flower and seed index. Correlated response was magnitude for boll number, boll weight and sympodia branch number. The boll number and sympodia branch number represented high heritability coupled with genetic advance. The indirect selection of boll weight and sympodia branch was more efficient to high yielding cotton breeding.

Keywords

correlated response, fiber quality, genetic correlation, seed cotton yield, selection

Pamukta (Gossypium hirsutum L.) Kantitatif Özelliklerin Kalıtımı ve Genetik İlerleme Üzerine Bir Çalışma

Abstract

Bu çalışma, line x tester eşleşme deseni uyarınca oluşturulmuş melez populasyonda verim, verim komponentleri ve lif kalite özellikleri yönünden kalıtımın, genetik ilerleme ve korelasyonun saptanması amacıyla yürütülmüştür. Tohum indeksi (0.789), çırçır randımanı (0.758), koza ağırlığı (0.644), ilk koza açma gün süresi (0.635) ve koza sayısı (0.617) için bulunan geniş anlamda kalıtım derecesinin yüksek olduğu görülmüştür. Koza sayısı, koza ağırlığı, lif dayanıklılığı, meyve dalı sayısı, ilk çiçek açma gün süresi ve tohum indeksinin kütlü pamuk verimi ile genetik korelasyonunun pozitif ve önemli olduğu saptanmıştır. Koza sayısı, koza ağırlığı ve meyve dalı sayısına ilişkin seleksiyon tepkisinin anlamlı olduğu görülmüştür. Koza sayısı ve meyve dalı sayısının hem kalıtım derecesinin hem de genetik ilerleme katsayısının yüksek olduğu bulunmuştur. Bu iki özellik için yapılacak dolaylı seleksiyonun yüksek verimli pamuk ıslahında başarı ile kullanılabileceği kanısına varılmıştır.

Keywords

seleksiyon tepkisi, lif kalite özellikleri, genetik korelasyon, kütlü pamuk verimi, seleksiyon

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