EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Comparison of flag leaf and canopy net photosynthesis in reduced height winter wheat isolines


Photosynthetica (Prague) 23(1): 49-54
Comparison of flag leaf and canopy net photosynthesis in reduced height winter wheat isolines
Net photosynthetic rate (PN) was measured by two methods in dwarf (D), semidwarf (SD), and tall (T) near-isogenic winter wheat (Triticum aestivum L.) lines grown in a modified humid continental climate. One minute samplings were made of flag leaf PN by CO2 depletion using a portable closed system. Canopy PN was measured over 60 min sampling intervals using an open system. Standard errors were smaller and more significant differences were observed by measuring canopy PN. When present singly, Rht1 or Rht2 genes in SD-1 and SD-2 isolines, respectively, did not enhance flag leaf or canopy PN during grain filling over that of the T (rht1rht2) isoline. The combination of Rht1 and Rht2 in D isolines resulted in a tendency for low flag leaf and canopy PN in both Burt and Omar winter wheat genetic backgrounds. The flag leaf and canopy measurements gave similar results for Burt-derived isolines, but not for Omar-derived isolines. Similarly, greater PN in SD and T lines were correlated with higher biomass and yield in Burt-derived isolines, but not in Omar-derived isolines. The combination of Rht1 and Rht2 genes in D reduced PN, biomass, yield, and harvest index.


Accession: 007140104



Related references

Canopy light interception, gas exchange, and biomass in reduced height isolines of winter wheat. Crop Science 35(6): 1636-1642, 1995

Effects of different tillage systems on photosynthesis characteristics of flag leaf and water use efficiency in winter wheat. Transactions of the Chinese Society of Agricultural Engineering 22(12): 44-48, 2006

Photosynthetic assimilation of 14CO2 and fate of 14C-labelled photosynthate in winter wheat (Triticum aestivum) near-isolines differing in alleles at the Rht1 and Rht2 reduced-height loci. Annals of Applied Biology 114(1): 141-148, 1989

Comparison of canopy and flag leaf net carbon dioxide exchange of 1920 and 1977 New York winter wheats. Crop Science 25(1): 81-86, 1985

Effects of reduced solar radiation on winter wheat flag leaf net photosynthetic rate. Ying Yong Sheng Tai Xue Bao 22(6): 1457-1464, 2012

Freeze fracture comparison of the thylakoids from the flag leaf and first leaf of winter wheat triticum aestivum. Photosynthetica (Prague) 23(1): 55-62, 1989

Comparison of canopy and flag leaf net carbon dioxide exchange of 1920 and 1977 new york usa winter wheats triticum aestivum. Crop Science 25(1): 81-86, 1985

Light distribution and correlation between flag leaf photosynthesis and grain yield in response to genotypes and nitrogen fertilization in winter wheat. Acta Agriculturae Zhejiangensis 12(4): 195-200, 2000

Photosynthetic assimilation of carbon 14 carbon dioxide and fate of carbon 14 labelled photosynthate in winter wheat triticum aestivum near isolines differing in alleles at the rht 1 and rht 2 reduced height loci. Annals of Applied Biology 114(1): 140-148, 1989

Comparison of flag leaf and ear photosynthesis with biomass and grain yield of durum wheat under various water conditions and genotypes. Agronomie 24(1): 19-28, 2004