"4328","11","archive","64",,,"disk0/00/00/43/28","2011-12-05 11:38:13","2011-12-05 11:39:08","2011-12-05 11:38:13","book_section",,,"show","Library-ICRISAT@cgiar.org",,,"","","","","","","","","","","0",,,"Reddy","B V S","","","","","","","Reddy","B V S","","","","",,,,,"","",,,,,"","","ICRISAT(Patancheru)","India","Alternative cytoplasmic male sterility systems in sorghum and their utilization","pub","s1.4","","","public",,,,,,"In sorghum, Stephen and Holland (1954) discovered cytoplasmic male sterility
(CMS) designated as milo cytoplasm in the progenies of a cross between two
cultivars, milo and combine kafi r, with milo as the female and kafi r as the male.
Male-sterile plants to the extent of 25% were observed in the F2 generation of the
above cross when milo was used as female and not as male. The male-sterile
segregants from this cross produced male-sterile hybrids when crossed with the
kafi r parent and fully fertile hybrids when crossed with the milo parent. Thus, it was
recognized that kafi r could be used as a maintainer of this source of CMS. Since
the progeny received the cytoplasm from the female, it was hypothesized that the
milo parent had a male sterility-inducing cytoplasm and dominant genes for pollen
fertility, whereas the combine kafi r parent contained a normal (fertile) cytoplasm
but the recessive male-sterile genes. All progenies of the milo×combine kafi r cross
contained milo (sterility-inducing) cytoplasm, but those that also inherited the
homozygous recessive genes from the kafi r parent were male-sterile. The malesterile
plants in the milo×combine kafi r cross were used as females in repeated
backcrossing with kafi r as the male parent. At the end of seven backcrosses, the
entire genome of kafi r was transferred into the milo cytoplasm. This resulted in
two morphologically similar versions of the combine kafi r (CK 60) parent: a malesterile
combine kafi r (CK 60A) and a male-fertile combine kafi r (CK 60B). The
male-sterile lines are designated as A-lines and their maintainer lines as B-lines.
Subsequently, several sources of CMS systems (A1, A2, A3, A4, A5 and A6) (Table
13) were discovered.","2008","published",,"Sorghum improvement in the new millennium",,,"International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, Andhra Pradesh, India","Patancheru, Andhra Pradesh, India","132-144","340",,,,,,,,,,"TRUE","978-92-9066-512-0",,"Sorghum improvement in the new millennium",,,,,"",,"http://scholar.google.com/scholar?as_q=%22Alternative+cytoplasmic+male+sterility+systems+in+sorghum+and+their+utilization%22&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&a","author",,"","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,
"4328",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Ashok Kumar","A","","",,,,,"Ashok Kumar","A","","",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
"4328",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Kaul","S L","","",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,