Selection of physiologic quality and yielding in the S2 lines derived from four tropical populations of maize (Zea mays L.)
DOI:
https://doi.org/10.15517/am.v7i1.24790Abstract
This study was carried out in 1993 to evaluate S2 lines from four maize tropical populations improved by reciprocal recurrent selection. These lines were evaluated under field and laboratory conditions, the latter one to determine physiology quality. The main goal was to measure genetic variability within and among populations for traits such as grain yield, vigor and germination and to select the best lines under field and laboratory conditions. The combined analysis of variance showed great genetic variability among the S2 lines within and among populations for grain yield, days to flower, plant and ear height, among others. The maximum genetic variability was observed on the lines from population 43 and pool 23 for most of the traits, although the latter showed a greater genetic variability for grain yield. Besides, it is important to mention that the above populations included the best genotypes for grain yield, germination and vigor. Taking into account the above mentionel agronomic traits, fifteen lines were selected; 2 belong to population 43* pool 20, 2 from pool 19* pool 23, 8 from population 43, and 3 from pool 23. These results confirm the genetic superiority of the lines from populations 43 and pool 23, so that these populations should be recommended for future genetic improvement by reciprocal recurrent procedures.
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References
ASSOCIATION OF OFFICIAL SEED ANALYSTS. 1983. Seed vigor testing handbook. Contribution No. 32. AOSA press. E.U.A.
CARANGAL, V.R.; ALI.; S.M.; KOBLE, AF.; RINKE, E.H.; SENTZ, J. C. 1971. Comparison of S1 testcross evaluation for recurrent selection in maize. Crop Sci. 11:658-661.
COMSTOCK, R.E.; ROBINSON, H.F.; HARVEY, P.H. 1949. A breeding procedure assigned to make maximum use of general and specific combining ability. Agron. J. 41:360-367.
CORTEZ, M.H.; RODRIGUEZ, A.; GUTIERREZ, C. M.; DURON, G. J.; GIRON C, R.; OYERVIDES, M. 1985. Evaluation of broad-base improved population of maize I. Cumulative gene effects and heterosis. Folleto interno. Ed. Universidad Autónoma Agraria “Antonio Narro”. Saltillo, Coah, México.
DELOUCHE, H. H. 1986. Physiological seed quality. Short course for seedsmen. Mississippi State University. Vol. 27:51-59.
GENTER, C.F. 1971. Yield of S1 lines from original and advanced synthetic varieties of maize. Crop Sci. 11:821- 824.
INTERNATIONAL SEED TESTING ASSOCIATION. 1985a. International rules for seed testing. Seed Sci. and Tech. 13:299-335. The Netherlands.
LINDSTROM, J.F. 1972. Inheritance of seed longevity in maize inbreds and hybrids. Genetics. 27:154-160.
LONNQUIST, J.H.; MCGILL, D.P. 1954. Gametic sampling from selected zygotes in corn breeding. Agr. J. 46:147-150.
McDONAL, M.B. 1982. The influence of seed size, shape and treatment on inbred seed corn quality, Seed Sci. & Technol. 10:307-313.
RODRIGUEZ, R.A. 1987. Improvement in storability of maize seed drought selection using accelerated aging. Thesis Ph. degree dissertation Mississippi State University, Mississippi.
SCOTT, G.E. 1981. Improvement for accelerated aging response of seed in maize population. Crop Sci. 21:41-43.
STEEL, G.D.; TORRIE, J.H. 1988. Bioestadística: Principios y procedimientos. Segunda Ed. McGraw Hill. México. pp. 683-685.
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