Path analysis of causal relationships among yield-related traits to explain yield variation in ‘Namchan’ (A) and ‘Nampyeong’ (B). HD: heading date, CL: clum length, PL: panicle length, PN: number of panicles per hill. NS: number of spikelets per panicle, RRG: ratio of ripened grain, BRR: brown/rough rice ratio, Normal-N and Low-N mean normal and low-nitrogen fertilizer level, respectively. Single and double-headed arrows indicate the direct effects on yield and correlation between each traits, respectively. Singe-headed arrows represent linear dependencies (direct effects) calculated as standardized regression coefficients, the double-headed arrows indicate correlation coefficients. Continuous and dotted arrows indicated positive and negative effects, respectively. Blue and red arrows indicated positive and negative effects, respectively. The arrow line thickness means proportion of the effect. ns, *, and ** indicate no significant, significant at 5 and 1% probability level, respectively.

Korean J. Breed. Sci. 2023;55:389-99 https://doi.org/10.9787/KJBS.2023.55.4.389

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