Host Plant Characteristics of Common Bean Lines Selected Using Indirect Measures of N2 Fixation

1985 ◽  
pp. 3-9 ◽  
Author(s):  
J. Attewell ◽  
F. A. Bliss
Keyword(s):  
Common Bean ◽  
Host Plant ◽  
N2 Fixation ◽  
Indirect Measures ◽  
Plant Characteristics

scholarly journals Growth and yield of common bean cultivars at two soil phosphorus levels under biological nitrogen fixation

2000 ◽  
Vol 35 (4) ◽  
pp. 809-817 ◽  
Author(s):  
ADELSON PAULO ARAÚJO ◽  
MARCELO GRANDI TEIXEIRA ◽  
DEJAIR LOPES DE ALMEIDA
Keyword(s):  
Common Bean ◽  
N2 Fixation ◽  
Soil Phosphorus ◽  
Block Design ◽  
Growth And Yield ◽  
Yield Potential ◽  
Genotypic Differences ◽  
Biological N2 Fixation ◽  
Randomized Block Design ◽  
P Supply

The genotypic differences on growth and yield of common bean (Phaseolus vulgaris L.) in response to P supply were evaluated in a field experiment under biological N2 fixation. Eight cultivars were grown at two levels of applied P (12 and 50 kg ha-1 of P -- P1 and P2 respectively), in randomized block design in factorial arrangement. Vegetative biomass was sampled at three ontogenetic stages. The effects of genotype and phosphorus were significant for most traits, but not the genotype ´ phosphorus interaction. The cultivars presented different patterns of biomass production and nutrient accumulation, particularly on root system. At P1, P accumulation persisted after the beginning of pod filling, and P translocation from roots to shoots was lower. The nodule senescence observed after flowering might have reduced N2 fixation during pod filling. The responses of vegetative growth to the higher P supply did not reflect with the same magnitude on yield, which increased only 6% at P2; hence the harvest index was lower at P2. The cultivars with highest yields also presented lower grain P concentrations. A sub-optimal supply of N could have limited the expression of the yield potential of cultivars, reducing the genotypic variability of responses to P levels.

scholarly journals N2 Fixation, Carbon Metabolism, and Oxidative Damage in Nodules of Dark-Stressed Common Bean Plants

1997 ◽  
Vol 113 (4) ◽  
pp. 1193-1201 ◽  
Author(s):  
Y. Gogorcena ◽  
A. J. Gordon ◽  
P. R. Escuredo ◽  
F. R. Minchin ◽  
J. F. Witty ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Common Bean ◽  
N2 Fixation ◽  
Carbon Metabolism ◽  
Bean Plants ◽  
Common Bean Plants

scholarly journals Orius albidipennis (Heteroptera: Anthocoridae): Intraguild predation of and prey preference for Neoseiulus cucumeris (Acari: Phytoseiidae) on different host plants

2008 ◽  
Vol 19 (1) ◽  
Author(s):  
Hossein Madadi ◽  
Annie Enkegaard ◽  
Henrik Brødsgaard ◽  
Aziz Kharrazi-Pakdel ◽  
Ahmad Ashouri ◽  
...  
Keyword(s):  
Host Plant ◽  
Intraguild Predation ◽  
Host Plants ◽  
Laboratory Experiments ◽  
Sweet Pepper ◽  
Thrips Tabaci ◽  
Neoseiulus Cucumeris ◽  
Orius Albidipennis ◽  
Plant Characteristics ◽  
Mite Eggs

A widespread interaction in natural enemy populations is intraguild predation (IGP), the intensity and outcome of which may be influenced by several factors. This study examined the influence of host plant characteristics on IGP between Orius albidipennis (Reuter) and Neoseiulus cucumeris (Oudemans) in laboratory experiments. The intraguild predation between the two predators was bi-directional, but predation by N. cucumeris on O. albidipennis is presumably of negligible importance. Orius albidipennis preyed uponmite eggs and adults in the absence of Thrips tabaci (Lindeman) (Thysanoptera: Thripidae), but in its presence predation on mite eggs was abandoned and predation on adult mites unchanged (sweet pepper) or reduced (eggplant, cucumber). The IGP-level of O. albidipennis on N. cucumeris was highest on sweet pepper and lowest on cucumber. Inclusion of host plant aspects in evaluations of the IGPpotential between predators intended for simultaneous applications for biocontrol is thus of importance.

Sign in / Sign up

Export Citation Format

Share Document