Effects Of The Rolling-Leaf On Biomass Production And Yield

Three near-isogenic lines with rolling leaf, semi- rolling leaf and flat leaf phenotype were studied to assess the effects of leaf type on photosynthesis, dry matter accumulation and yield. The results showed that:1. The differences of rolling ratio and drooping degree were significant among three near-isogenic lines, and the negative relationship appeared between crinkle-ratio and drooped degree in a certain range.2. Light penetration in population of three near-isogenic lines also related to leaf crinkle-ratio, the population of those rolling-leaf and semi-curling leaf lines could allow more light entering into canopy layer than that of flat leaf population.3. Although Single-leaf photosynthetic rate of the rolling leaf and semi-rolling leaf lines was smaller than that of the unrolling leaf line, the photosynthesis rate of high density population of the rolling leaf and semi-rolling leaf lines was higher.4. At high planting density, dry matter production of half-rolling leaf population during the later growth stage was vigorous, and the dry matter accumulation was obviously more than that of unrolling-leaf population.5. Under high-density level, the yield of half-rolling-leaf population was 12% and 17% higher than that of unrolling-leaf and rolling-leaf population, respectively.