biologia plantarum

Biologia plantarum 17:88-94, 1975 | DOI: 10.1007/BF02920966

Characteristics and inheritance of chlorophyll mutations inPhaseolus mungo

S. Appa Rao¹, Manas K. Jana¹

¹ Applied Botany Section, Indian Institute of Technology, Kharagpur, India

Viable mutations affecting chlorophyll production in black gram (Phaseolus mungo L.) were recovered following treatments with X-rays and ethyl methanesulphonate singly or in combination. Of these theviridis mutant was characterized by viridine green colour of all the leaves and reduced plant size. inchlorotica the emerging leaves were initially yellowish green which gradually changed to dark green at flowering. The terminal 2-3 leaves always remained yellowish green inchlorina-terminalis whereas inchlorina-virescence the emerging leaves were yellowish green that changed to dark green at flowering. Inalbo-virescence the first 3-5 leaves at emergence were white in which small irregular green dots or patches often developed. The subsequent leaves were normal green. The emerging trifoliate leaves ofaureo-virescence were light green which turned to turtle green within a week. It was established thatviridis, chlorotica, chlorina-terminalis, chlorina-virescence, andalbo-virescence mutants were conditioned by a single receissive gene, in each case. Theaureo-virescence character was found to be inherited through the cytoplasm.

Received: February 19, 1974; Published: March 1, 1975  Show citation