Effect of Rhizobium sp. inoculation on N2-fixing and photosynthetic activities of two cowpea [Vigna unguiculata (L.) Walp.] genotypes

Title:

Effect of Rhizobium sp. inoculation on N2-fixing and photosynthetic activities of two cowpea [Vigna unguiculata (L.) Walp.] genotypes

Creator:

Lippi, D., de Paolis, M. R., Osmi, M., Pietrini, F., Pietrosanti, T., Villani, M. C., and Massacci, A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2d858dd6-1266-4747-b710-188372b79dd7
uuid:2d858dd6-1266-4747-b710-188372b79dd7
issn:0300-3604
doi:10.1023/A:1007155710506

Subject:

acetylene reduction, leaf area, monocarpic senescence, plant octogeny, and ureides

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Time course of symbiotic N2-fixing and photosynthetic activities during vegetative growth from 30 d after plantation until pod set was measured in the CB5 and 7964 cowpea [Vigna unguiculata (L.) Walp.] genotypes of contrasting senescence traits. At emergence, seedlings were inoculated with a "non-cowpea miscellany" Rhizobium strain generally used to inoculate Cicer arietinum. Maximum N2-fixing activity occurred in inoculated CB5 and 7964 plants about 54 and 68 d after plantation, respectively. A similar temporal shift of maximum was found for net photosynthetic rate (PN), confirming a good coordination between the two processes. A higher PN was found from the first measurements in inoculated plants of both genotypes as compared with uninoculated plants. Apparently, the maximum activity of both N2-fixation and PN was timed to occur at a particular stage of plant ontogeny correlating the high N supply with the high N demand by the plant. Rhizobium inoculation did not significantly affect partitioning coefficients of biomass to various plant organs but extended leaf longevity by about 10 d in the CB5 genotype, retarding thus the monocarpic senescence. and D. Lippi ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

413-422

Source:

Photosynthetica | 1999 Volume:37 | Number:3

Harvested from:

CDK

Metadata only:

false