TY  - JOUR
AV  - public
A1  - Mallikarjuna, N
A1  - Saxena, K B
TI  - A new cytoplasmic nuclear male-sterility system derived
from cultivated pigeonpea cytoplasm

UR  - http://dx.doi.org/10.1007/s10681-005-1199-x
JF  - Euphytica
SN  - 0014-2336
PB  - Springer
N1  - The authors thank Mr. V. Balakrishna for the technicalassistance.  
N2  - Cytoplasmic male-sterility (CMS) in pigeonpea has been reported when some wild relatives of pigeonpea were crossed as the female parent with cultivated types as the male parent. In this paper we report a new source of CMS developed by using the cultivated pigeonpea as the female parent and one of its wild relative Cajanus acutifolius as the pollen donor. This is the first report in pigeonpea where CMS has been developed using the cytoplasm of cultivated pigeonpea. Several pure line cultivars of pigeonpea restored pollen fertility whereas cv. HPL 24 partially maintained male-sterility. The wild species C. acutifolius used as one of the parents, maintained complete sterility. Cytological analysis revealed that both in male-sterile as well as the fertile floral buds, meiosis proceeded normally till the tetrad stage. However in the male-sterile genotypes during the formation of tetrads, the pollen mother cell (PMC) wall did not dissolve to release the tetrads unlike in the fertile genotypes and this major event was found to be responsible for male-sterility.
KW  - pigeonpea
KW  -  Cajanus acutifolius
KW  -  cytoplasmic male-sterility
KW  -  tetrads
KW  -  restorers
KW  -  maintainers
Y1  - 2005///
SP  - 143
ID  - icrisat2166
EP  - 148
VL  - 142
IS  - 1-2
ER  -