ISSN:
1573-5060
Keywords:
Triticum sp.
;
tetraploid wheats
;
semi-dwarfism
;
yield
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary A genetic study of a range of NORIN 10 based semi-dwarf durum wheats showed that only Gai/Rht 1, located on chromosome 4A, was present. No varieties carrying a second Gai/Rht allele were identified and deliberate attempts to introduce Gai/Rht2 into tetraploid wheats have so far been unsuccessful. In a spaced plant trial of homozygous random F3 lines from two tall x semi-dwarf crosses, the semi-dwarfs has lower ear yields, due mainly to reduced kernel weight, but had higher tiller numbers than the tall genotypes. Although there was no difference in overall plant yield between talls and semi-dwarfs, an analysis of character associations within the semi-dwarf F3's showed positive height-yield and height-kernel weight correlations indicating that selection for ‘tall dwarfs’ may be a useful breeding strategy in tetraploid wheats.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00033996
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