Title: Genetic Analysis on Characters of Functional Leaves in Rice
Abstract: Genetic characterization of functional leaves of rice(Oryza sativa L.subsp.indica),including flag leaf,the 2nd leaf from the top and the 3rd leaf from the top,was conducted based on diallel cross data(7×10 and 9×9)with 13 sterile lines and 19 restorer lines by the NCⅡ design.The F1 and parents were planted at Luzhou,Sichuan and Beibei,Chongqing with a randomized block design and three replications.The results showed that the genetic variances of the flag leaf width,the length and the width of the 2nd leaf from the top,and the length of the 3rd leaf from the top were led by both additive and dominant effects,in which the genetic variances of the leaf width were mainly led by additive effects while those of the leaf length were mainly led by dominant effects.The genetic variance of the flag leaf length was primarily led by dominant effect,while the width of the 3rd leaf from the top was only led by additive effect.The dominant effect and environmental effect interaction of the length of the functional leaves were significant at 5% or 1% level,while the additive effect and environmental effect interactions of the width of the functional leaves were not significant.Narrow heritability(h2N)of the leaf width was generally higher than that of the leaf length in the two sets of combinations,in which h2N of the width of the 2nd leaf from the top was the highest,with 58.65% and 48.19% respectively in the two sets of combinations.The length and the width of functional leaves in rice exhibited mid-parent heterosis or negative over-parent heterosis at various degrees,in which the mid-parent heterosis ranged from 4.46% to 27.53%,and the indexes of heterosis of the leaf width and length all exceeded 100%.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot