Photosynthetic characteristics of three varieties of Lilium “Oriental Hybrids” in the central areas of Yunnan Province, China

Abstract

To understand the ecophysiological adaptation of Lilium ''Oriental Hybrids'', which are grown for their commercial bulbs, the gas exchange, leaf N and chlorophyll content of the three varieties were investigated in the central areas of the Yunnan Province. Among the three varieties, light-saturated photosynthetic rate at ambient CO 2 (A max ) of Tiber was the highest, while that of Siberia was the lowest. The difference in the A max was related to the carboxylation efficiency (CE), leaf mass per unit area and leaf N content per mass, which indicated that their photosynthetic capacity was influenced by the activity and/or the quantity of Rubisco. The three varieties had lower photosynthetic saturation points and photosynthetic compensation points, but the photosynthetic rates were not decreased up to 2000 mmol?m 22 ?s 21 of the light intensity. This indicates that the three varieties had broad adaptability to light intensity. There were significant differences in the photosynthetic optimum temperature among the three varieties. Siberia had the highest photosynthetic optimum temperature (25.5uC-34.9uC), and is likely to grow well in warm areas. Sorbonne had the lowest photosynthetic optimum temperature (19.3uC-25.6uC), and its growth is favored in cool areas. Tiber can maintain a high photosynthetic rate within a wide range of temperature. Therefore, Tiber is the most suitable variety for the climate in the central areas of the Yunnan Province, China.

Turning over a new ‘leaf’: multiple functional significances of leaves versus phyllodes in Hawaiian Acacia koa

“…At higher c i values the curves diverged with the leaves having higher values, accounting for their difference in V c,max . We note that a similar pattern has been reported several times in comparisons of varieties, intrageneric hybrids, and juvenile and adult leaves of given species (Wu & Campbell 2006; Kubien, Jaya & Clemens 2007; Chang et al . 2008).…”

Effect of CO₂ Enrichment on the Photosynthesis and Dry Matter Accumulation in the Oriental Hybrid Lily ‘Siberia’

“…1, 2, and 3). The photosynthetic characteristics of Oriental hybrid lilies, including 'Siberia', have already been reported by Chang et al (2008). Their results were generally consistent with our evaluation of photosynthetic characteristics, although there were some differences.…”

“…When our whole plant photosynthetic rate values (Figs. 2 and 3) were converted to leaf area-based values (data not shown), they were lower than those of Chang et al (2008), especially in the low light intensity range. This difference may be because they measured the photosynthesis of individual leaves, while we measured the individual plant.…”

“…However, the variety of lilies, and their growth and physiological characteristics are very diverse. For example, Chang et al (2008) reported wide diversity of photosynthetic characteristics among Oriental hybrid lily cultivars. In this study, we found that the average time from planting to flowering of Oriental hybrid lilies was about 1.5 times longer than that of Asiatic hybrids (Inamoto, unpublished data).…”

Deep planting improved stem root growth, flower yield and quality of Lilium cultivars

“…Assessment of proper management practices to improve lily growth, flower quality and yield is not new. However, few studies have included leaf gas exchange analysis [photosynthesis (P n ), stomatal conductance (g s ) and transpiration (E)] as an aid to understand the leaf-level physiology of lily plants (Chang et al, 2008;Othman et al, 2021). In addition, no study we are aware of has assessed the effect of planting depth on stem roots and flower quality (color, diameter, number per plant) of lily cultivars.…”