Discovery of new male-sterile cytoplasm sources and development of a new cytoplasmic-nuclear male-sterile line NJCMS3A in soybean

Abstract

Most of the cytoplasmic-nuclear malesterile (CMS) lines of soybean were developed only from a limited cytoplasm sources and performed not as good as required in hybrid seed production, therefore, to explore new male-sterile cytoplasm sources should be one of the effective ways to improve the pollination and hybridization for a better pod-set in utilization of heterosis of soybeans. In the present study, total 80 crosses between 70 cultivated and annual wild soybean accessions and three maintainers (N2899, N21249, and N23998) of NJCMS1A were made for detecting potential new sources with male-sterile cytoplasm. The results showed that in addition to the crosses with N8855.1 (the cytoplasm donor parent of NJCMS1A) and its derived line NG99-893 as cytoplasm parent, there appeared three 2006 fertility segregation of crosses between NJCMS3A and three restorers. The nuclear gene(s) of male sterility in NJCMS3A appeared different from the previously reported CMS lines, NJCMS1A and NJCMS2A. The development of NJCMS3A demonstrated the feasibility to discover new CMS system through choosing maintainers with suitable nuclear background.

Genetic variability in CMS backcross generations and their maintainers in eggplant (Solanum melongena L.)

“…There is a report of induced cytoplasmic male sterility (CMS) in eggplant through wide hybridization between S. aethiopicum and S. melongena (Khan and Issihiki, 2010). Male sterility is an established genetic tool that evaded , 2231-5209 (Online) All Rights Reserved © Applied and Natural Science Foundation www.jans.ansfoundation.org hand emasculation and pollination during hybrid seed production and, exploited world-wide in large number of field and vegetable crops (Fang et al, 1997;Zhao and Gai, 2006;Chen et al, 2008;Deol et al, 2013;Shen Xian-hua et al, 2013 andIslam et al, 2015). Thus, we made an attempt to cross S. aethiopicum and S. melongena to induce non-pollen formation type of cytoplasmic male sterility.…”

Cytoplasmic male sterility with self-incompatibility, a novel approach to utilizing heterosis in rapeseed (Brassica napus L.)

“…In hybrid breeding, an eVective and economic pollination control system is necessary for the production of F 1 hybrid seed. Since male sterility has been considered to be the most eVective pollination control system and is widely used in the application of heterosis in crops (Fu 2000;Zhao and Gai 2006), breeders have been trying to discover a new male sterile system (Yang and Fu 1993;Meng et al 1995;Zhao et al 2000). However, it would take a long time to elucidate the mechanisms of male sterility and Wnd the maintainers and the restorers before the new system can be used in agricultural practice (Meng et al 1995).…”

“…The utilization of heterosis is considered to be one of the most eVective ways to increase crop yield, because there is signiWcant heterosis in the seed yield of F 1 hybrids in crops (Shen et al 2005;Sodhi et al 2006;Zhao and Gai 2006). Compared with other plants, Brassica species have been more successful in using heterosis because of eVective and economic pollination control systems for the production of F 1 hybrid seeds on a large scale.…”

Genetic bases of improved soybean cultivars released from 1923 to 2005 in China—A historical review

“…It was reported in the literature that there is obvious maternal effect in the inheritance of some seed traits, such as soymilk output, tofu output, protein concentration, and linolinic acid as the embryo-generation is concerned (Qian et al, 2001). In addition, some traits, such as male sterility, were reported to be cytoplasmicly inherited (Bai andGai, 2005, 2006;Zhao and Gai, 2006). Therefore, the cytoplasmic effect must also be important and should be tested and highlighted in choosing the maternal parent in a breeding program.…”