Effects of Multi-leaf on Photosynthesis and Yield of Konjac

doi:10.7668/hbnxb.2017.S1.032

Abstract

Abstract: In order to study the effects of multi-leaf on photosynthesis and yield of konjac,the photosynthesis and yield indexes of single leaf plants and multi-leaf plants were measured and compared with the rhizomes of konjac as the materials.The results showed that the occurrence rate of multi-leaf from rhizomes was high and most of them were two-leaf plants.The lobule number and leaf area of multi-leaf plants were significantly higher than those of single leaf plants.The net photosynthetic rate(Pn) of the lobules was not significant among different types of plants and different leaves.The intercellular CO₂ concentration,stomatal conductance and transpiration rate were not significantly different between the leaves of single leaf plants and the first leaves of multi-leaf plants.The maximum photosynthetic efficiency and non-photochemical quenching of photosystem Ⅱ of single leaf plants were higher,while other chlorophyll fluorescence parameters were not significantly different.The corm weight and coefficient of expansion of the multi-leaf plants were significantly higher than those of the single leaf plants,and there was no significant difference in the content of glucomannan of the corms.It was concluded that the multi-leaf mainly increased the lobule number and the leaf area to improve the yield,and had no significant effect on Pn and the content of glucomannan of the corms.

Key words: Konjac, Multi-leaf, Photosynthesis, Yield

CLC Number:

S632.01

QIN Yaoguo, YANG Cuiqin, GU Honghui, WANG Zhengxiang, JIANG Xiong, YANG Fuqing, CHEN Zhizhou, YAN Zesheng. Effects of Multi-leaf on Photosynthesis and Yield of Konjac[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(S1): 185-188. doi: 10.7668/hbnxb.2017.S1.032.

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