Evaluation of selfing in some alfalfa ecotypes.
2011
Qotbi, Vida | Mofidiyan, Mohammad A`li | Chugan, Rajab | Moniri Far, Hassan | Zamani, Majid
The main reason of alfalfa breeding is to gain a cultivar with high green and dry forage yield and also more protein. In spite of complexity of being autotetraploid, there has been some success in alfalfa breeding. Self-fertilization method uses to achieve more uniform characters and homozygosity, therefore, it is possible to cross among selected plants with high yield in alfalfa selfed families to produce another population with new genetic structure. In order to evaluate the possibility of selfing in alfalfa breeding program, alfalfa mother plants for selfing were selected among the 14 planted alfalfa ecotypes and cultivars including Ghahavand, Rahnani, Famanin, Silvana, Mohajeran, Malek-Kondi, Gharghalogh, Bami, Nickshahri, Yazdy, Sequel, Diabloverde, Mesasersa and seariver. Seed of three selfed generations from every selective clones obtained over three years from 1387-1389. Data from alfalfa plants of selfed generations indicated that inbreeding depression on green forage yield, height observed in all selfed generations, however most severe in I2. Among investigated alfalfa ecotypes the most marked depression was observed in some ecotypes that seem they have less narrow genetic background.
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