A multivariate approach to the selection of pea (Pisum sativum L.) lines obtained by the single seed descent technique
Grain legumes, especially pea and lupine, are important agricultural crops in Central and Northern Europe. Because of the high level of protein in their seeds, these species constitute an alternative to soya meal imported from South America. The breeding of new cultivars in a short time is...
Main Authors: | , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Serbian Genetics Society
2017-01-01
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Series: | Genetika |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0534-0012/2017/0534-00121701365S.pdf |
Summary: | Grain legumes, especially pea and lupine, are important agricultural crops in
Central and Northern Europe. Because of the high level of protein in their
seeds, these species constitute an alternative to soya meal imported from
South America. The breeding of new cultivars in a short time is a major
problem in pea breeding, particularly since the production of homozygous
lines in the DH (doubled haploid) system, as used for cereals, for example,
is very difficult. An alternative approach may be the single seed descent
(SSD) method. The materials for this study were lines of pea obtained by
that method combined with in vitro culture of embryos. This approach enabled
9 generations to be obtained in 2.5 years. First, SSD lines (F10) were
investigated in a field experiment conducted in a complete randomized design
with two replications, in which the dates of flowering and ripening and seed
yield per plant were observed. Seventy seven lines out of 120 (64%) were
selected for a subsequent experiment in which F4 generations of each cross
combination were also included. In the second field experiment SSD lines
were evaluated for earliness, plant height, seed yield per plot, and
1000-seed weight. The data were processed by multivariate analysis of
variance and related methods, leading to the selection of 16 lines for
further breeding experiments. Multivariate analysis can be helpful for
breeders in seeking plants with a new favorable complex of yield-forming
traits. |
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ISSN: | 0534-0012 1820-6069 |