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Title:   Author  item
                                            AN, CHUANFU - MISSISSIPPI STATE UNIVitem
                                            Jenkins, Johnieitem
                                            Saha, Sukumaritem
                                            McCarty, Jack
  Submitted to: Agronomy Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 6/1/2008
                                    Publication  Date: 11/1/2008
                                    Citation: An, C., Jenkins, J.N., Saha, S., McCarty Jr., J.C. 2008. A novel allele of Li-2 producing different types of fibers in cotton seeds in different branches of the same plant [abstract]. Agronomy Abstracts. CD-ROM.Interpretive Summary:
                                Technical Abstract: Li-2 is a monogenic, dominant mutant characterized by only short fuzz fibers on mature seeds in cotton.  We observed an abnormal phenotype associated with Li-2  with individual plants with branches producing different types of fibers in the same plant.  We used Li-2 in partial diallel crosses with FM 966 (normal seeds with both lint and fuzz fibers), MD17 (an USA fiberless line), 177 (another Chinese fiberless line), and 181 (naked seed with only lint fiber line). We did not observe the abnormal phenotypes among the crosses with any other genotypes except Li-2 suggesting the presence of a novel allele in Li-2 causing this abnormal phenotype.  We also observed different proportions of such abnormal phenotype in different generations (F1, F2, BC1F1) among the crosses of Li-2.  We detected the following proportion of abnormal plants with seeds producing different types of fibers in different branches of the same plant: Li-2 (22%), FM966 x Li-2 (F1 42%, F2 1%, BC1F1 5%),  MD17 x Li-2 (F1 38%, F2 2%, BC1F1 0.4%),  177 x Li-2 (F1 33%, F2 2%, BC1F1 2%),  and 181 x Li-2 (F1 40%, F2 1%, BC1F1 3%).  We observed this abnormal phenotype in both field and greenhouse conditions.  This abnormal phenotype could be caused by different genetic effects including low penetrance or a tansposable element or some other cytogenetic abnormalities.


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