Development of better naturally colored cotton lines (gossypium hirsutum l.) regarding seed cotton yield, ginning outturn and fiber technological properties under kahramanmaras conditions
Jun 16, 2019

Breeding & Genetic improvement Network coordination Network-MedMiddleEast Breeding-Asia Fiber Quality

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Author


Lale Efe

Kahramanmaras Sutcu Imam University, Faculty of Agriculture, Field Crops Department

Abstract


The aim of this project carried out in 2011-2013 under Kahramanmaras conditions was to develop superior lines for seed cotton yield, ginning outturn and fiber technological properties from four naturally coloured cotton populations (Gossypium hirsutum L.) crossing naturally and having genetic variation using method  of  pedigree selection. Naturally coloured cotton populations used as materials had fibers coloured light brown, dark brown, green and creamy.

In 2011 year, 100 individual plants were selected from each coloured population according to field observations such as fiber colour, plant form, boll and leaf form, plant height, number of monopodia, number of sympodia, boll number per plant (for four colour 4x100=400 plants). Each  plant was harvested separately. In  100 plants (for each colour) seed cotton yield, ginning outturn, 100 seed weight, boll weight, seed cotton weight per boll, fiber length, fiber fineness, fiber strength, fiber elongation, fiber uniformity, short fiber index, trash area, trash count, trash degree were recorded. According to seed cotton yield, ginning outturn, 100 seed weight, boll and fiber traits 50 individual plants were selected to be sown in next year. In 2012 year, self pollinated seeds of 50 plants selected from four populations having different fiber colours were sown in the separate rows 5 m in length. Thus, 200 progeny rows were formed in total (50 dark brown, 50 light brown, 50 green, 50 creamy). The all plants in rows were self pollinated during flowering period. Individual plant selection were repeated in progeny rows according to field observations. 2 or 3 plants selected according to field observations in each row were harvested  separately (For each colour 50x2=100 plants, in total 100x4=400 plants). For each colour in 100 plants seed cotton yield, ginning outturn, 100 seed weight, boll and fiber traits were recorded. According to these traits 50 individual plants were selected. Self pollinated seeds of these plants were sown in the next year. In 2013 year these steps were replicated.

As a result, in each colour individual plants higher yielding and having higher lint properties were obtained. Second part of this project continuous to obtain homozygous and pure lines using self pollination from 2014 to 2016.

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