中国生物工程杂志

The differences of photosynthetic characters and yields among three leaf-types of Pinallia ternate, the willow-leaf type, the peach-leaf type and the heart-leaf style, were studied and compared. The result showed that P. ternata was a typical shade-plant, of which LCP was only 700μmol•photons/s•m-2. Photo-inhibition was observed among all the three leaf-types of P. ternata, and the willow leaf type showed the most obvious photo-inhibition. Both of the light response Pn curve and single tuber weight were significant different among leaf styles. Result for studying the chlorophyll fluorescence parameters showed that all the difference of NPQ, qP and qN among three leaf-types of P. ternata were significant and the difference of potential-photosynthetic productivity among them was significant. The willow leaf style had the strongest light-tolerance capacity. We found that individuals of T2(peach-leaf type) had the highest Pn and single tuber weight among 11 superior individuals and the individuals of L2(willow-leaf type) showed the strongest light-tolerance capacity.