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| Titel: |
PLEIOTROPIC EFFECT OF Rht3 DWARFING GENE ON SOME TRAITS OF WHEAT (Tr. aestivum L. em Thell) |
| Auteur: |
Marijan Jošt Vesna Samobor Siniša Srečec |
| Verschenen in: |
Poljoprivreda |
| Paginering: | Jaargang 7 (2001) nr. 1 pagina's 10-14 |
| Jaar: |
2001 |
| Inhoud: |
True-isogenic lines, differing only in the semi-dominant Rht3 dwarfing gene, were developed from the cross 'Tom Thumb x Bankuty 1201' during 17 years of continuous selection on heterozygous semidwarf plant. The effect of double (Rht3 Rht3 = full-dwarf), single (Rht3 rht3 =semi-dwarf), or no dwarfing gene (rht3 rht3 = tall) dosage on some plant, seed, and flour quality traits were observed in the isogenic lines during two years field experiment, planted by 'honey-comb design' at Kri`evci, Croatia. Significant main effect of Rht3 gene was in shortening of plant height by 54% and 28% in double and single gene dosage respectively. Full-dwarf genotype (Rht3 Rht3) had by 12% more heads/plant, but the other yield components as number of grains/head, and grain weight/head were lower by 25 and 28% respectively, resulting in significantly lower grain yield/plant (-27%). However, this also could be a secondary side effect of prolonged vegetation influenced by doubled Rht3 gene. There was no significant effect on flour protein content. Double gene effect was strong and significant for maximum dough viscosity measured by amylograph in BU (101%). In our environment full dwarf (Rht3 Rht3) has no agronomic value, but single gene dosage could be of commercial interest in hybrid wheat breeding. |
| Uitgever: |
Faculty of Agriculture in Osijek (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 12 gevonden artikelen
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