Gene Dosage at the Autoflowering Locus Effects Flowering Timing and Plant Height in Triploid Cannabis

There is demand for early-flowering cannabis ( Cannabis sativa ) cultivars to hasten harvest and avoid late-season detrimental weather conditions. A field study greenhouse studies were conducted evaluate the effect of gene dosage at autoflowering locus on flowering timing diploid triploid hybrids between photoperiod-sensitive parents. Autoflowering × all photoperiod sensitive, but their critical photoperiods longer than homozygous plants, which resulted in earlier flowering. For genotypes, decreasing allele (A), from AAA AAa Aaa, reduced time Flowering genotype Aa was intermediate Aaa AAa. These results provide evidence incomplete dominance locus. Plants flowered 32 40 days genotypes AA, 15 Aa, ready by second week August Connecticut. as tall other studied, suggests that they have similar yield potential. The use tetraploid (aaaa) maternal plants combination with (AA) pollen parents produce seed a reliable approach developing flower production purposes.