The role of asparagine and seed coat thickness in resistance of Phaseolus vulgaris (L.) to Callosobruchus maculatus (F.) (Col., Bruchidae)

1991 ◽  
Vol 111 (1-5) ◽  
pp. 412-417 ◽  
Author(s):  
Y. E. Seifelnasr
Keyword(s):  
Phaseolus Vulgaris ◽  
Seed Coat ◽  
Callosobruchus Maculatus ◽  
Phaseolus Vulgaris L

scholarly journals The seed coat of Phaseolus vulgaris interferes with the development of the cowpea weevil [Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)]

2004 ◽  
Vol 76 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Luciana B. Silva ◽  
Maurício P. Sales ◽  
Antônia E. A. Oliveira ◽  
Olga L. T. Machado ◽  
Kátia V. S. Fernandes ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Seed Coat ◽  
Callosobruchus Maculatus ◽  
Phaseolus Lunatus ◽  
Phaseolus Vulgaris L ◽  
Terminal Amino Acid ◽  
Cowpea Weevil ◽  
Legume Seeds ◽  
Terminal Amino ◽  
The Common

We have confirmed here that the seeds of the common bean (Phaseolus vulgaris, L.) do not support development of the bruchid Callosobruchus maculatus (F.), a pest of cowpea [Vigna unguiculata (L.) Walp] seeds. Analysis of the testa (seed coat) of the bean suggested that neither thickness nor the levels of compounds such as tannic acid, tannins, or HCN are important for the resistance. On the other hand, we have found that phaseolin (vicilin-like 7S storage globulin), detected in the testa by Western blotting and N-terminal amino acid sequencing, is detrimental to the development of C. maculatus. As for the case of other previously studied legume seeds (Canavalia ensiformis and Phaseolus lunatus) we suggest that the presence of vicilin-like proteins in the testa of P. vulgaris may have had a significant role in the evolutionary adaptation of bruchids to the seeds of leguminous plants.

scholarly journals The role of seed coat in the germination and early stages of growth of bean (Phaseolus vulgaris L.) in the presence of chickweed (Stellaria media (L.) Vill.)

2019 ◽  
pp. 103-118 ◽  
Author(s):  
Aleksandra Mazur
Keyword(s):  
Phaseolus Vulgaris ◽  
Seed Germination ◽  
Seedling Growth ◽  
Seed Coat ◽  
Dry Mass ◽  
Control Group ◽  
Aqueous Extracts ◽  
Phaseolus Vulgaris L ◽  
Stellaria Media

The aim of the study was to determine the role of the seed coat in the presence of aqueous extracts from Stellaria media (L.) Vill. on germination and early growth stages of bean seeds Phaseolus vulgaris L. Dry shoots of the chickweed aqueous extracts were prepared, with which the bean seeds with coat and without coat were treated. The control group was seeds watered only with distilled water. After 7 days of the experiment, seed germination parameters, seed germination rate (SE), seed vitality index (SVI), seedling growth inhibition index (IP), fresh and dry mass values and percentage water content were determined. The experiment showed the germination capacity of bean seeds was varied, in relation to seeds from the control. With increasing concentrations of extracts, a significant reduction in the seed germination rate was observed, both for those with seed coat and without seed coat. The seed vitality index increased only in seeds with coat, and decreased in each of the applied concentrations of extracts in seeds without seed coat. The seedling growth inhibition index reached negative values in both groups of seeds tested only at a concentration of 5%. In comparison to the control, IP was positive for seedlings watered with 15% extracts. For P. vulgaris seedlings grown on 5% of extracts the highest increase in the fresh mass was observed, in relation to the value of control mass. For seedlings grown from seeds with seed coat the diferences in the dry mass values primarily were noted. The percentage of water content in bean seedlings varied depending on the group of seeds studied and the concentration of allelopathic substances in the chickweed aqueous extracts. The examined indexes of seed germination and seedling growth showed that in the case of P. vulgaris seeds without seed coat. The role of seed coat in the germination and early stages of growth of bean (Phaseolus vulgaris L.) in the presence of chickweed (Stellaria media (L.) Vill.) were more sensitive to aqueous extracts from dry shoots of S. media. Compared to the control group, in low concentrations of allelopathic substances the seeds germinated similarly to the distilled water, and at higher concentrations, the seeds germination, the seedlings growth and fresh and dry mass values were inhibited.

scholarly journals Induction of seed coat darkening in common beans (Phaseolus vulgaris L.) and the association with cooking time after storage

2020 ◽  
pp. 21-27 ◽  
Author(s):  
Renata C. Alvares ◽  
Helton S. Pereira ◽  
Leonardo C. Melo ◽  
Phillip N. Miklas ◽  
Patrícia G. S. Melo
Keyword(s):  
Phaseolus Vulgaris ◽  
Genetic Correlation ◽  
Seed Coat ◽  
Uv Light ◽  
Accelerated Aging ◽  
Cooking Time ◽  
Ambient Conditions ◽  
Phaseolus Vulgaris L ◽  
Dry Bean ◽  
Cooking Times

Carioca is the most important edible dry bean (Phaseolus vulgaris L.) grown in Brazil. It represents the largest dry bean market class in the world. The seed coat of carioca beans will darken under adverse harvest conditions and with the increasing of storage time. In general, darkened seeds are associated with older seeds that suffer from prolonged cooking times. A relatively new ‘slow darkening’ trait is available in carioca that delays seed coat darkening under storage. However, its effect on cooking time is unknown. The objective of this work was to evaluate two induction methods of seed coat darkening and to examine the effect of slow darkening trait on cooking time after storage. Lines derived from four segregating populations resulting from crossings between cultivar BRSMG Madrepérola with slow seed coat darkening, and the parents BRS Estilo, BRS Cometa, BRS Notável and BRS Sublime with normal darkening were evaluated. An experiment inlcuding 220 lines, 55 per population and the five parents, in a 15x15 triple lattice was conducted in the winter growing season in Brasilia. Seed coat darkening and cooking time traits were evaluated. Two methods for inducing seed coat darkening were compared: an accelerated aging test using UV light for 72 hours, and an extended storage for 90 days under ambient conditions. The correlation between the induction methods ranged from 0.77 to 0.85 for the different populations indicating either method could be used to discriminate lines with normal versus slow darkening trait. The percentage of light-colored grain lines was identified by both induction methods of seed coat darkening ranged from 75 to 85.7% in the populations. The genetic correlation between seed coat darkening and cooking time varied from -0.06 to -0.48, indicating that in some populations there is no significant genetic correlation between seed coat darkening and cooking time. Thus, light colored grains are not indicative of low cooking time, when they are considered genotypes with genetic variation for the seed coat darkening.

Effects of Phaseolus vulgaris (Fabaceae) seed coat on the embryonic and larval development of the cowpea weevil Callosobruchus maculatus (Coleoptera: Bruchidae)

2014 ◽  
Vol 60 ◽  
pp. 50-57 ◽  
Author(s):  
Leonardo Figueira Reis de Sá ◽  
Tierry Torres Wermelinger ◽  
Elane da Silva Ribeiro ◽  
Geraldo de Amaral Gravina ◽  
Kátia Valevski Sales Fernandes ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Larval Development ◽  
Seed Coat ◽  
Callosobruchus Maculatus ◽  
Cowpea Weevil ◽  
Embryonic And Larval Development
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