The association of fiber quality parameters and lint yield components of the F3 derived F4 progeny of two upland cotton populations
Başlık çevirisi mevcut değil.
- Tez No: 400615
- Danışmanlar: DR. C. WAYNE SMITH
- Tez Türü: Yüksek Lisans
- Konular: Ziraat, Agriculture
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1996
- Dil: İngilizce
- Üniversite: Texas A&M University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 88
Özet
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Özet (Çeviri)
New cotton, Gossypium hirsutum L., cultivars must be developed to meet the demands of new spinning technology as well as the cotton producers. However, efforts to improve both fiber quality parameters and lint yield components has been limited due to the negative correlation between lint yield components and fiber quality parameters. The purpose of this study was to determine the association of fiber quality parameters and lint yield components within two diverse populations of F3* lines. Fiber quality parameters, determined by high volume instrument, were: micronaire, upper half mean fiber length (UHM), uniformity index (UI), fiber strength, and elongation. Within-boll yield components, determined by direct measurements or through calculations included: seed surface area (SA/S), lint percentage (LP), seeds per boll (S/B), lint weight per seed (L/S), fibers per seed (F/S), lint weight per unit seed surface area (L/SA), and fibers per unit seed surface area (F/SA). In population 1: micronaire was positively correlated with fiber uniformity index, strength, LP, S/B, L/S, and L/SA, and negatively associated with length, F/S and F/SA. Fiber length was positively associated with fiber uniformity index, strength, SA/S, L/S, and negatively associated with LP, F/S, L/SA, and F/SA. Fiber uniformity index was positively correlated with strength, SA/S, L/S. Fiber strength was positively associated with SA/S, S/B, L/S, and L/SA, and negatively associated with F/S and F/SA. In population 2: micronaire was positively associated with UI, LP, S/B, and L/SA, and negatively correlated with F/S and F/SA. Fiber length was positively correlated with strength, SA/S, and L/S, and negatively correlated with LP, S/B, and F/SA. Fiber uniformity index was positively associated with strength, and S/B, and negatively correlated with F/S and F/SA. Strength was positively associated with SA/S, S/B, and L/S, and negatively correlated with LP, F/S, and F/SA. None of the lines in either population showed a positive association between fiber strength and F/SA which is the most basic unit of within-boll lint yield. However, in population 1, fiber strength was not significantly associated with LP. This result suggests that breeders could select for higher LP and simultaneously select for higher fiber strength in population 1.
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