Yield and Quality Determinations of F1 and F2 Hybrids

Lyndon Schoenhals and J.R. Gannaway


 
ABSTRACT

Six F1 hybrids and their corresponding F2's from the three 'B' lines, Deltapine 50, Acala 1517-77, and OCDBBOS-3-83 and the two 'R' lines, Paymaster 112686 and Dixie King Nectariless were planted in a randomized yield trial. The test contained a total of twenty entries replicated four times. Data gathered included yield, agronomic and fiber properties. The Paymaster HS-26 check cultivar yielded the most lint per acre, 673 pounds. The six F1 hybrid yields ranged from 575 to 640 pounds of lint per acre. The F2 hybrids ranged in yield from 454 to 591 pounds per acre.

Two of the crosses, Deltapine 50 x Dixie King Nectariless and OCDBBOS-3-83 x Paymaster 112686, exhibited equal or greater yield in the F2 as compared to the F1 hybrid. The other four crosses had higher yielding F1 hybrids with OCDBBOS-3-83 x Dixie King Nectariless and Acala 1517-77 x Paymaster 112686 having significantly better yields in the F1 than the corresponding F2. The agronomic property of ginned lint percent reflected no differences. The other agronomic properties were generally similar with a few exceptions for the F1's and their F2's. While hybrid vigor was evident in the yield data, generally the F1 and F2 hybrid fiber properties showed few differences.

In conclusion, all of the F1 hybrids produced more lint than the five parental lines. The F2's were not as consistent from a yield standpoint as the F1's. This variability in concert with that produced for the other agronomic and fiber properties emphasizes the importance of selecting parental lines for production of F2'S from F1 hybrids.



Reprinted from 1990 Proceedings: Beltwide Cotton Production Research Conferences pg. 69
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998