e-ISSN 2231-8542
ISSN 1511-3701

Home / Regular Issue / JTAS Vol. 16 (3) Dec. 1993 / JTAS-0033-1993


Inbreeding Depression and Heterosis in Sweet Corn Varieties Manis Madu and Bakti-1

Ghizan bin Saleh, Mohd. Rafii Yusof and Yap Thoo Chai

Pertanika Journal of Tropical Agricultural Science, Volume 16, Issue 3, December 1993

Keywords: lea mays, sweet corn, inbreeding depression, heterosis

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S1 and full-sib progeny families developed from selfing and crossing between Manis Madu and Bakti-1 sweet corn varieties were evaluated to estimate inbreeding depression and heterosis in the populations. Selfing has caused a significant decrease in the measurements of all characters taken in both selfed populations, except for days to tasseling which has shown an increase. Midparent heterosis estimates for the characters evaluated ranged from -2.83% to 22.34% for the Manis Madu X Bakti-1 cross progeny population (MMB1), and from -2.65% to 16.57% in the Bakti-1 X Manis Madu cross progeny population (B1MM). The two varieties revealed good potential to be used as parents for crosses between improved populations or inbred lines developed from them.

ISSN 1511-3701

e-ISSN 2231-8542

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