Home plant breeding genetics plant tissue culture seed technology biotechnology agriculture glossary theagricos. Com only search theagricos. Com back to : home « plant breeding « male sterility in plants « types of male sterility types of male sterility cytoplasmic male sterility cytoplasmic male sterility is governed by cytoplasmic or plasma genes. Progeny of male sterile plant is always male sterile, as its cytoplasm is derived entirely from female gamete in the system, there are a and b line. half viagra pill work The male sterile line is also known as a line. buy cheap viagra
The line used to maintain male sterile line is male fertile, b line. viagra canada online
The a line is maintained by crossing it with b line (pollinator strain used as recurrent parent in the backcross program), as its nuclear genotype is identical with that of the a line. The restorer line only can provide fertility in f1. use viagra after expiration date It is stable i. half viagra pill work E. bayer hellas viagra Not influenced by environmental factors. There are certain drawbacks for the method like it can not be used in asexually propagated crops, to produce hybrids in crops where improvement in seed / fruit is considered. viagra online without prescription
Application of cytoplasmic male sterility in plant breeding it is applicable in production of hybrids in ornamental crops and vegetatively propagated crops, overall, where grain or fruit is not the economic product. generic viagra online
Examples – observed in maize, wheat, rice, sorghum, cotton genetic male sterility it is governed by nuclear genes, in most of the cases by single gene. The gene causing male sterility are ordinarily recessive (ms) and rarely dominant (e. G. Safflower). In the system, there are a and b line. generic viagra
A line (mm) is genetic male sterile line. B line is heterozygous male fertile line (mm). viagra ou viagra A line is maintained by crossing it with b line, the cross produces male sterile and male fertile lines in 1:1 ratio. viagra for sale in ireland
Application of genetic male sterility in plant breeding it is applicable in production of hybrids in both, vegetatively propagated crops and crops important for fruit or seed yield. viagra 5mg lilly fta Examples – wheat, maize, barley, sorghum, lucern cotton, sunflower, tomato and cucurbits cytoplasmic-genetic male sterility it is governed by both nuclear and cytoplasmic genes. Here, nuclear genes for fertility restoration (rf) are available. half viagra pill work The fe.