Combining Ability Analysis in Sweet Corn (Zea Mays Saccharrata L.) Using Line by Tester Design.
The purpose of this study was to investigate the different combination of testcrosses for morphological and yield relating traits and to investigate general combining ability of the inbred lines. It is the third major source of staple food after wheat and rice for mankind. It is a short duration crop and can be successfully grown in areas of high mountains of KPK, where snowfalls and chilling temperature limits growing period of cereals. Maize has 5 types i.e flint corn, dentcorn, popcorn, flour corn and sweet corn. Sweet corn is a variety of maize having high sugar content. It
differs from field corn interms of its genetic makeup. It contains high percentage of sugar during milk stage. It is grown in several areas of Khyber Pakhtunkhwa including Mansehra, Mingora and
Swabi for local market purpose. Potential yield of sweet corn can be maximized through various breeding schemes.
Analysis of variance disclosed highly significant variation (p<0.01) among the testcrosses for days to tasseling, plant height and cob length, and significant variation (p<0.05) for grain yield, while
non-significant variation for dasy to silking among the testcrosses. Kamara et al have noticed similar significant results for tasseling, plant height and grain yield. Variation due to lines effect
was highly significant for tasseling, silking and plant height, significant for cob length and non-significant for grain yield. Variation due to tester effect was non-significant for flowering
and yield traits, while highly significant for plant height. Similarly variation due to line and tester interaction was non significant for silking and tasseling, and highly significant for cob length and
plant height, while significant for grain yield.
Adv Food Technol Nutr Sci Open J. 2020; 6(2): 47-52. doi: 10.17140/AFTNSOJ-6-168
