| Popis: |
Temperature is an important factor that affecting growth and development in cotton (Gossypium hirsutum L.). This research was carried out at Kahramanmaraş and Elbistan conditions having different altitude and temperature in 2012, after the hybridization which made in 2011. For this purpose, eight parents and their fifteen F1 hybrids which are obtained by Line x Tester used as a plant material in a randomized complete block design with four replications. In this study, the effects of Kahramanmaraş and Elbistan conditions were examined on the number of day and degree-day units required for squaring, flowering, bolls opening and harvesting times as well as seed cotton yield, gin outturn, fiber fineness and fiber length. Results indicated that investigated properties, except fiber length were affected by Kahramanmaraş and Elbistan conditions. While genotypes were using less degree-day unit for the first squaring in Elbistan, have been used more degree-day unit in Kahramanmaraş for the first flower, boll opening and harvest times. But, genotypes have been used more day number for collect to degree-day units in Elbistan. For this reason, although genotypes which have 207.41 kg da-1 seed cotton yield in 195 days using 1593.5 °C degree-day unit in Elbistan, had been got 426.25 kg da-1 seed cotton yield in 157 days using 2480.1 oC degree-day in Kahramanmaraş. As a result, 1x4 F1 hybrids and Fantom for Elbistan, 1x5 F1 hybrids and Stoneville 468 for Kahramanmaraş are found very important. |
