Vol. 10, Issue 12 (2021)

Author(s):
D Chouhan, RB Dubey, P Choudhary and D Singh

Abstract:
The present study was conducted to estimate mid parent heterosis, heterobeltiosis and economic heterosis in sweet corn (Zea mays L. Ssp. saccharata) hybrids and to screen out hybrids having high green cob and fodder yield and high TSS content. A total 66 genotypes comprising of 45 sweet corn hybrids, 18 parental lines and 3 standard checks (Priya, Madhuri and Sugar-75) were evaluated in RBD in three different environments (E₁ at Instructional Farm, RCA, Udaipur during Kharif-2019, E₂ at ARS, Banswara during Kharif-2019 and E₃ at Instructional Farm, RCA, Udaipur during Rabi-2019-20) in RBD with three replications for twenty diverse traits. A number of crosses exhibited heterosis for green cob and fodder yield, while only few hybrids reported to exhibit heterosis for TSS and protein content.Maximum and positively significant heterosis over the best check was shown by the sweet corn hybrid L₇ x T₁ (73.68%) for green cob weight/ plant. Highest and positively perceptible economic heterosis for green fodder yield (kg/ ha) and TSS content of green grain was observed for the sweet corn hybrids L₄ x T₂ (86.24%) and L₁₁ x T₁ (17.89%) respectively.