Vol. 10, Issue 7 (2021)

Author(s):
VS Pawar, CB Salunke, GC Shinde and RS Wagh

Abstract:
The study was conducted using eight inbred lines at the research form of STRU, MPKV, Rahuri. An evaluation trial comprising of eight parents, fifty-six F₁s (including direct and reciprocal crosses) and two standard checks viz., Rajarshi and P3401 were conducted during Rabi 2018 with three replications in randomized block design. The heterosis investigates maturity and yield character over the two checks. For days to 50 percent tasseling heterosis was ranged from -10.95 to 10.43 percent for mid parent, from -9.85 to 18.39 percent for heterobeltiosis, from 7.74 to 42.58 percent for standard check over Rajarshi and from -12.11 to 16.32 percent for standard check over P 3401. The magnitude of variation in the relative heterosis for days to 50 percent silking was ranged from -10.96 to 10.12 percent over mid parent, from -8.61 to 18.89 percent over better parent, from 5.52 to 37.42 percent over the standard check Rajarshi and from -12.69 to 13.71 percent over standard check P3401. The heterosis for days to maturity ranged from -6.03 to 7.72 percent over mid parent and from -4.02 to 11.40 percent over better parent, from 3.91 to 23.49 percent over Rajarshi and from -8.75 to 8.44 percent over check P3401. Heterosis for kernel yield per plant was varied from -35.39 to 130.70 percent over mid parent, from -51.76 to 112.99 percent over better parent, from -65.12 to 38.35 percent over Rajarshi and from -65.94 to 35.11 percent over check P3401. The crosses, GPM-456 x HYD-08R-2453-2, HYD-09R-1204-1 x HYD-09R-2178-2and HYD-09R-2178-2 x HYD-08R-2570-2 showed significant negative heterosis for days to 50 percent tasseling over the mid parent, better parent and over standard check P3401. The cross combination GPM-456 x HYD-08R-2453-2 and HYD-09R-1204-1 x HYD-09R-2178-2 showed significant negative heterosis for day to 50 percent silking over the mid parent, better parent and check P3401. The crosses HYD-09R-1204-1 x HYD-09R-2178-2, HYD-09R-2178-2 x HYD-08R-2570-2 and HYD-08R-656-1 x HYD-09R-2178-2 showed significant negative heterosis for days to maturity over the mid parent, better parent and check P3401. The crosses, GPM-456 x HYD-08R-656-1, GPM-456 x HYD-09R-1204-1 and HYD-08R-2453-2 x HYD-09R-1204-1 revealed highly significant and positive heterosis for kernel yield per plant (g) over the mid parent, better parent and both check viz., Rajarshi and P3401. These crosses are most suitable for exploitation of heterosis.