Abstract
A compact dwarf plant type TDT2004-1 isolated from the progeny of a cross involving Cajanus cajan (cv. ‘C-11’) and C. cajanifolia was investigated for its inheritance. Pigeonpea genotype TDT2004-1 is semi-determinate in growth habit; short (approximately 37 cm) with reduced internodal length (1.2 cm), a compact canopy and a high harvest index (40%), while genotype TT44-4 is indeterminate in growth habit; tall (132 cm) with normal internodal length (2.3 cm), an open canopy and a low harvest index (28.9%). The inheritance study involving cross TT44-4 × TDT2004-1 showed that the compact dwarf plant type was governed by a single recessive gene. TDT2004-1 could be utilized for improving the harvest index and also for restructuring the plant canopy in pigeonpea.
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