Linkage and Semi-Sterility

Sterility

Sterility in Wheat Hybrids. I. Sterility Relationships and Endosperm Development.

Partial or complete sterility is of frequent occurrence in species crosses. Within the same genus certain species are sterile when crossed while ather combinations are completely fertile. Partial sterility may cause the elimination of certain classes of gametes and prevent desired recombinations of characters in the second generation. Sterility may also cause an abnormal vegetative development....

Down-Regulation of OsEMF2b Caused Semi-sterility Due to Anther and Pollen Development Defects in Rice

Anther and pollen development are crucial processes of plant male reproduction. Although a number of genes involved in these processes have been identified, the regulatory networks of pollen and anther development are still unclear. EMBRYONIC FLOWER 2b (OsEMF2b) is important for rice development. Its biological function in floral organ, flowering time and meristem determinacy have been well-stu...

Fertility and Sterility

Objective: To examine the qualitative and quantitative characteristics of frozen-thawed spermatozoa recovered through the SpermPrep (ZBL, Inc., Lexington, KY) filtration method or the swim-up technique for the purpclse of intrauterine insemination (IUI) or other techniques for assisted reproduction. Design, Setting, Patients: Thirty pairs of frozen specimens purchased from three commercial seme...

Fertility and Sterility® Vol

Received June 5, 2001; revised and accepted October 16, 2001. Reprint requests: Wolfgang E. Paulus, M.D., Christian-Lauritzen-Institut, Frauenstr. 51, D-89073, Ulm, Germany (FAX: ++49-731-9665130; E-mail: [email protected]). [a] Department of Reproductive Medicine, Christian-Lauritzen-Institut. [b] Department of Traditional Chinese Medicine, Tongji Hospital, Tongji Medical University, Wuhan, P...