10. New characters in maize, teosinte, and maize-teosinte hybrids:
adL -- adherent plant. Can be classified in early seedling stage; tips of leaves stick together. Plant becomes almost normal until anthesis, when anthers, tassel branches, and silks become sticky and tend to adhere. Viability and fertility good. Chrom. unknown.
Several plants each of Nobogame, Huixta, Novocayan, and Durango teosinte were selfed and progeny tests made for genetic characters. The following characters segregated in 3:1 ratios:
These genes will be crossed with similar maize genes to test for possible allelism.
sd -- response to short day. Recessive to "weak" response to length of day in maize. Mendelian character.
pd -- single female spikelets. Recessive to paired female spikelets of maize. Segregates in 3:1 ratio. (Collins and Kempton, 1923).
tr -- two-ranked ear and two-ranked central branch of the tassel. Recessive to the many-ranked ear and many-ranked central branch of the maize tassel. Mendelian character.
pd is linked with tr with 20% recombination. Chromosome unknown.