INTRODUCTION TO PLANT BREEDING

AGRONOMY 815 / CLASS ASSIGNMENTS


P. STEPHEN BAENZIGER, 338 Keim Hall, 472-1538

DEPARTMENT OF AGRONOMY / UNIVERSITY OF NEBRASKA



PROBLEM SET 4Due October 2, 1997


Name: ________________________________________________________________________




1.You have made the following cross:

AAbbCCddxaaBBccDD
30 cm tall30 cm tall

F1AaBbCcDd


Assuming that each dominant gene has an equal effect and adds 2 cm to plant height, what is the height of the following genotypes:


aabbccdd

AABBCCDD

AaBbCcDd


How many classes will there be in the F2?





What are the height classes and what is the number of lines (or proportion) in each class?






What is the smallest complete population in the F2?






How many classes will there be in the F3?