CORRELATION OF ROOT CHARACTERS TO SEED CHARACTERS OF 27 SOYBEAN GENOTYPES (GLYCINE MAX (L.) MERILL) IN THE RAINY SEASON WITHOUT APPLICATION OF N FERTILIZER
Keywords:
Path Analysis, soybean, N Fertilizer, Rainy seasonAbstract
Fulfillment of N element requirement in soybean cultivation is supported not only by environmental condition, but also by N-fixing microbial activity. One group of bacteria that is able to provide nutrients for plants is Rhizobium japonicum bacteria which causes the formation of root nodules. The purpose of this study was to analyze the relationship of root characters, and to find out which characters have the greatest influence on the seed weight of 27 soybean genotypes (Glycine max (L.) merill) in the rainy season without N fertilizer. The relationship between the observed characters was analyzed using correlation test, while to determine the direct and indirect effects of each character on the results were analyzed using path analysis. The relationship between the characters of the number of effective taproot nodules and the number of effective fibrous root nodules on seed weight per plant had a positive but not significant correlation. The greatest direct influence on seed weight per plant was shown in the character of the number of effective taproot nodules.
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