BREEDING TROPICAL SUPERSWEET CORN

in HortScience

“Waimanalo Supersweet” will be released at the time of the 1992 ASHS meeting in Hawaii. A singlecross supersweet corn based on the brittle gene, “Waimanalo Supersweet” represents over 50 generations of inbreeding and backcrossing in Hawaii. Successive projects involved the development of sugary inbreds and their conversion to Mv. Ht. Rp-d and brittle genes. The inbred parents have very limited temperate germplasm and are relatively daylength sensitive. This single cross hybrid and its related 3X (“Hawaiian Supesweet #10”) and OP variety (“Hawaiian Supersweet #9”) show tolerance to Puccinia sorghi rust and Fusarium Moniliforme kernel rot greatly in excess of commercial sweet corns to which they have been compared, and they have performed capably throughout the tropics. Available data on pest tolerance, growth and quality will be summarized.

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