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Root length
Like seedling height and coleoptile length, root length was also
affected severely by storing the seeds (Table
3). The effect in
fresh and one year old seeds was not much. In two years stored seeds,
the disomic line showed 24% reduction. The monosomic line 5D showed
highest reduction (64%) followed by monosomic lines 1B (62%), 7D
(60%) and 1A (58%). The reduction in three years old seeds was much
more than two years old seeds. The disomic line itself showed about
47% of reduction in root length. The reduction in root length in
monosomic lines 1A, 1B, 4A, 4B, 4D, 5A, 5D, 6D, 7A and 7D was more
than 60%. Monosomic fine 5A showed reduction of 79%. Joshi et al
(1970) also pointed out the effect of chromosome 5A on faster root
growth.
References
Allan RE and Vogel OA (1964) F2 monosomic analysis of
coleoptile and first leaf development in two series of wheat crosses.
Crop Sci 4: 338-339.
Atale SB and Joshi MG (1981) Root and shoot development in Tritical.
Ind J Genet 41: 41-45.
Gale MD and Spencer D (1974) Location of genes controlling enzyme
production in endosperm. EWAC Newsletter 4: 16-17.
Gale MD and Marshall GA (1976) The chromosomal location of Gai1 and
Rht1 genes for gibberellin insensitivity and semidwarfism, in a
derivative of Norin 10 wheat. Heredity 37: 283-289.
Gale MD, Law CN, Marshall GA and Worland AJ (1975) The genetic
control of gibberellic acid insensitivity and coleoptile length in
"dwarf" wheat. Heredity 34: 393-399.
Joshi BC, Singh D and Upadhya MD (1970) Red grain associated with
faster growth of roots in hexaploid wheat. WIS 31: 8-9.
Law CN and Worland AJ (1985) The identification and evaluation of
height genes. Annual Wheat Newsletter 31: 104.
Sutka J and Kovacs G (1987) Chromosomal location of dwarfing gene
Rht12 in wheat. Euphytica 36: 521-523.
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