Variation in leaf photosynthetic characteristics in wild rice species

Title:

Variation in leaf photosynthetic characteristics in wild rice species

Creator:

Kiran, T. V., Rao, Y. V., Subrahmanyam, D., Rani, N. S., Bhadana, V. P., Rao, P. R., and Voleti, S. R.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:09a2257f-262c-41e9-bd32-703ff8dfaa6d
uuid:09a2257f-262c-41e9-bd32-703ff8dfaa6d
issn:0300-3604
doi:10.1007/s11099-013-0032-3

Subject:

fotosyntéza, photosynthesis, gas exchange, rice, specific leaf area, specific leaf mass, stomatal conductance, wild rice, 2, and 581

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Variations in leaf gas-exchange characteristics, leaf pigment content, and other important leaf traits were investigated in seven wild Oryza species, five hybrids, and five improved varieties. The significant variations were observed in photosynthetic pigment contents amongst different species of Oryza. The mean chlorophyll (Chl) content was higher in O. sativa (varieties and hybrids), while O. eichengeri showed the lowest Chl content. The mean carotenoid (Car) content in O. sativa (varieties and hybrids) was higher than in other wild rice species. O. eichengeri and O. barthii had significantly lower Car contents than other rice species. Significant differences were noticed in the rate of photosynthesis (PN), stomatal conductance (gs), transpiration rate (E), internal CO2 concentration (Ci), specific leaf mass (SLM), and leaf thickness amongst different Oryza species. The mean PN was the highest in O. nivara followed by O. eichengeri. The mean PN was the lowest in O. glumaepatula, which was lower than that of cultivated varieties and hybrids of O. sativa. High rates of photosynthesis were observed in O. nivara (ACC. No. CR 100097), O. rufipogon (ACC.No. CR 100267), and O. nivara (ACC.No. CR 100008). The O. nivara and O. rufipogon genotypes with high PN might be used in rice improvement programmes for an increase of leaf photosynthesis in rice. Multiple correlations performed between different gas-exchange characteristics and other physiological traits revealed that the rate of photosynthesis was not dependent on the leaf pigment content or the leaf thickness. A strong positive correlation between PN and the PN/Ci ratio, which represents the carboxylation efficiency, indicated that the observed variation in PN was not based on pigment content or other leaf traits. and T. V. Kiran ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

350-358

Source:

Photosynthetica | 2013 Volume:51 | Number:3

Harvested from:

CDK

Metadata only:

false