DOI: 10.36347/sajb.2013.v01i05.011

Pages: 209-212

There are several methods adopted for genetic analysis of commercially important crops however, no such mathematical models are developed to quantify the parental traits transmission in the F1 progenies derived through hybridization in commercial crops like coffee. In this context, an attempt was made to design a formula that could enumerate the genetic traits contributed by the paternal and maternal lines to the offspring. Calculation of quantitative traits transmission was carried out based on an example of the morphological parameters recorded on the dwarf and tall parents of arabica coffee and their F1 hybrid progeny. Formula revealed that ‘Cauvery’ as a dwarf female parent had stronger influence (85.7%) on bush spread in the progenies as compared to the tall parents (14.3%). This indicated that cultivar ‘Cauvery’ had genetic dominance over Sln.9 a tall parent. Similarly, taking tall as a dominant character in another example, the traits transmission was worked out in Cauvery x Sln.9 cross combination. The new formula was found very handy to study the degree of paternal and maternal influence separately in the F1 progeny of any commercial crops and also applicable in future breeding programme.