This work was supported by the National Natural Science Foundation of China(Grant Nos.39770473 and 30170058);the National High Technology Research and Development Program of China(Grant Nos.2001AA212081 and 2004AA212104).
Lintless mutant is a super-short fiber mutant in upland cotton only 4—8 mm in fiber length and also named Ligon cotton controlled by one dominant gene Li1. Fiber ul- trastructure of the mutant (Li1) and its wild type...