Heritability and Correlations Among Popping Characteristics and Seed Weight in a Broad-based Temperate-adapted Nuña Bean (Phaseolus vulgaris L.) Population

N una beans are a type of common bean (Phaseolus vulgaris L.) from the Andean region of South America that possess the unique property of popping. To develop temperate-adapted nuna bean cultivars, knowledge is needed regarding the inheritance and relationships among popping characteristics and seed weight. Nuna bean landraces are often photoperiod-sensitive; thus, to obtain estimates of the genetic parameters associated with seed characteristics, populations adapted to the long days of northern temperate climates were developed. Four sets of 10 families, sampled from a temperate-adapted population, were crossed in a Design II mating design. The heritabilities of seed weight, popping percentage, and the coefficient of expansion were relatively high, 0.77 ± 0.04, 0.87 ± 0.07, and 0.74 ± 0.09, respectively. Large positive phenotypic (0.773) and additive genetic (0.539) correlations were observed between popping percentage and the coefficient of expansion. Correlations with seed weight were not significant. The results indicate that direct selection for either increased popping percentage or coefficient of expansion will simultaneously improve both traits with little or no change in seed weight.

[1]  J. Nienhuis,et al.  Effects of Seed Moisture Content, Cooking Time, and Chamber Temperature on Nuna Bean (Phaseolus vulgaris L.) Popping , 2009 .

[2]  Shree P. Singh,et al.  Genetics of Seed Yield and its Components in Common Bean (Phaseolus vulgaris L.) of Middle-American Origin. II. Genetic Variance, Heritability and Expected Response from Selection , 1988 .

[3]  I. J. Johnson,et al.  Inheritance of popping volume and associated characters in crosses between popcorn and dent corn , 1949 .

[4]  Comstock Re,et al.  The components of genetic variance in populations of biparental progenies and their use in estimating the average degree of dominance. , 1948 .

[5]  P. J. Lyerly.  Genetic and morphologic characters affecting the popping expansion of popcorn , 1942 .

[6]  D. Debouck,et al.  Variability in Andeannuña common beans (Phaseolus vulgaris, Fabaceae) , 2008, Economic Botany.

[7]  J. Nienhuis,et al.  Recent notes and observations on: standardization of popping evaluations for Nuna germplasm , 1998 .

[8]  K. Zimmerer.  Biological Diversity and Local Development: "Popping Beans" in the Central Andes , 1992 .

[9]  J. Litchfield,et al.  Effects of Kernel size and genotype on popcorn popping volume and number of unpopped Kernels , 1991 .

[10]  R. Hoseney,et al.  Mechanism of popcorn popping , 1983 .

[11]  A. Hallauer,et al.  Quantitative Genetics in Maize Breeding , 1981 .

[12]  H. F. Robinson,et al.  The components of genetic variance in populations of biparental progenies and their use in estimating the average degree of dominance. , 1948, Biometrics.