Intra-cultivar variation in cotton: response to single-plant yield selection at low density

Journal of Agricultural Science - Tập 149 Số 2 - Trang 197-204 - 2011
Ioannis S. Tokatlidis1, C. Tsikrikoni1, Anastasios Lithourgidis2, J. T. Tsialtas3, Constantinos Tzantarmas1
1DEMOCRITUS UNIVERSITY OF THRACE
2Aristotle University Farm of Thessaloniki
3Cotton and Industrial Plants Institute

Tóm tắt

SUMMARYIn a 5-year study (2004–2008), the possibility of exploiting intra-cultivar variation in cotton (Gossypium hirsutumL.) was investigated. Honeycomb single-plant selection for seedcotton yield was employed within three cultivars at a low density of 1·15 plants/m2. First- and second-generation progeny lines (1GPLs and 2GPLs) were evaluated for seedcotton yield at low density at three sites, whereas third-generation progeny lines (3GPLs) were tested at the crop density of 10 plants/m2across two sites and 2 years. Significant differentiation for seedcotton yield was discovered within cultivar (cvar)Christinaand cvarCoronaat both low and crop densities, and within cvarFloraat low density. In addition, significant intra-cultivar heterogeneity for fibre quality properties was found at crop density. The 1GPLs and 2GPLs grown at low density showed increases in seedcotton yield of 16 and 19%, respectively, in cvarChristina, and of 2·6 and 3·7%, respectively, in cvarCorona. In cvarFlora, the 1GPLs and 2GPLs yielded 10 and 3·3% lower than the mother cultivar, respectively. When grown at standard crop density, across sites and years, 12 and 5·2% higher yield was obtained by theChristina-derived 3GPLs and theCorona-derived 3GPLs, respectively, when compared with the original cultivars. These results provide evidence that elite cultivars are not homogeneous but rather heterogeneous material, within which selections can be made to maintain or improve uniformity and further improve desirable agronomic traits.

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Tài liệu tham khảo

10.1093/aob/mci013

10.2135/cropsci1999.3961552x

Sprague, 1960, Mutations affecting quantitative traits in the selfed progeny of doubled monoploid maize stocks, Genetics, 45, 855, 10.1093/genetics/45.7.855

10.1017/S0021859602002198

10.1017/S0021859606006174

Fasoulas A. C. (2000). Building up resistance to Verticillium wilt in cotton through honeycomb breeding. In New Frontiers in Cotton Research. Proceedings of the 2nd World Cotton Research Conference, Athens, Greece, 6–12 September 1998 (Ed. Gillham F. M. ), pp. 120–124. Thessaloniki, Greece: P. Petridis Publishers.

10.2135/cropsci1968.0011183X000800010014x

10.1007/BF00023161

10.1017/S0021859608007892

10.1139/g95-138

Dudley, 2004, 100 generations of selection for oil and protein in corn, Plant Breeding Reviews, 24, 79

10.2135/cropsci2002.0951

10.1071/AR00026

10.2135/cropsci2005.0125

10.1016/j.fcr.2007.12.017

10.2135/cropsci1972.0011183X001200060002x

10.1111/j.1365-3040.2003.01134.x

Laverack, 1994, Management of breeders seed production, Seed Science and Technology, 22, 551

10.1126/science.15739260

10.2135/cropsci2005.09.0334

10.1007/s10681-006-9169-5

10.2135/cropsci1997.0011183X003700020001x

10.1016/S0378-4290(02)00026-6

10.1139/g97-050

10.2135/cropsci1997.0011183X003700030009x

10.1017/S0021859699007637

Laverack, 1995, Roguing seed crops for genetic purity: a review, Plant Varieties and Seeds, 8, 29

10.1038/ng1615

10.1017/S0021859608007867

Fasoulas, 1995, Honeycomb selection designs, Plant Breeding Reviews, 13, 87, 10.1002/9780470650059.ch3

Fasoula, 1997, Competitive ability and plant breeding, Plant Breeding Reviews, 14, 89

10.1007/s10681-010-0160-9

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Journal of Agricultural Science

Tập 149 Số 2

197-204

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