Notes on the genetics of a few leaf characters in the genus citrus

✍ Scribed by H. Toxopeus

• Publisher: Springer
• Year: 1962
• Tongue: English
• Weight: 732 KB
• Volume: 11
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00044800

✦ Synopsis

In a few hybridization experiments data were collected on the genetical basis of: a. the red-brown colour of the young flush of Meyer lemon (Citrus limon) b. the occurrence of broad-winged petioles of C. maxima and C. hystrix c. the trifoliate leaf character of Poncirus trifoliata.

The Meyer lemon is heterozygous for a colour-factor A causing the brownish-red colour of its flush. In the F 1 the leaf characters of Meyer lemon in general dominate over those of C. maxima, though the width of the wings along the petiole is intermediate.

Crossing the monofoliate species C. maxima and C. hystrix resulted in a large percentage of trifoliate hybrids suggesting the presence of two dominant and complementary genes C and D for leaf dissection, one in each species.

The trifoliate character is dominant in crosses between Poncirus trifoliata and C. maxima. It is assumed that P. trifoliata is homozygous for the genes C and D.