Some Seed Traits and Their Relationships to Seed Germination, Emergence Rate Electrical Conductivity in Common Bean (Phaseolus vulgaris L.)

The common bean (Phaseolus vulgaris L.), the most important food legume for human nutrition globally, contributes greatly to the improvement of soil fertility in semi-dry lands where most of the soil is already salinized or alkalized, such as in the Songnen Plain of China. In this study, we investigated the effects of salt stress (neutral and alkaline) on the salt-tolerant common bean. Seed germination, seedling growth, photosynthesis, and osmotic adjustment were assessed. Neutral and alkaline salt growth environments were simulated using NaCl and NaHCO3, respectively. The results indicated that at ≥60 mmol·L−1, both NaCl and NaHCO3 caused significant delays in seedling emergence and decreased seedling emergence rates. NaHCO3 stress suppressed seedling survival regardless of concentration; however, only NaCl concentrations >60 mmol·L−1 had the same effect. Alkaline salt stress remarkably suppressed photosynthesis and seedling establishment. The common bean compensated for the increase in inorganic anion concentration (influx of Na+) by synthesizing more organic acids and soluble sugars. This adaptive mechanism enabled the common bean to balance the large inflow of cations for maintaining a stable cell pH environment under alkaline salt stress.

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Genetics of intra-gene pool and inter-gene pool hybridization for seed traits in common bean (Phaseolus vulgaris L.) germplasm from Europe

Field Crops Research ◽

10.1016/j.fcr.2009.02.003 ◽

2009 ◽

Vol 112 (1) ◽

pp. 66-76 ◽

Cited By ~ 14

Author(s):

A.M. González ◽

A.P. Rodiño ◽

M. Santalla ◽

A.M. De Ron

Keyword(s):

Phaseolus Vulgaris ◽

Common Bean ◽

Gene Pool ◽

Seed Traits ◽

Phaseolus Vulgaris L

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Differences in seed germination of wild and domesticated common bean (Phaseolus vulgaris L.) in response to storage

South African Journal of Botany ◽

10.1016/s0254-6299(15)31192-3 ◽

2001 ◽

Vol 67 (4) ◽

pp. 620-628 ◽

Cited By ~ 5

Author(s):

M. López Herrera ◽

J.R. Aguirre Rivera ◽

C. Trejo ◽

C.B. Peña-Valdivia

Keyword(s):

Phaseolus Vulgaris ◽

Seed Germination ◽

Common Bean ◽

Phaseolus Vulgaris L

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SEED GERMINATION AND RADICLE ESTABLISHMENT RELATED TO TYPE AND LEVEL OF SALT IN COMMON BEAN (PHASEOLUS VULGARIS L. VAR. DJEDIDA)

Cercetari Agronomice in Moldova ◽

10.46909/cerce-2019-0026 ◽

2019 ◽

Vol 52 (3) ◽

pp. 262-277

Author(s):

L.M. MANSOURI ◽

N. HELEILI ◽

Z.F. BOUKHATEM ◽

A. KHELOUFI

Keyword(s):

Phaseolus Vulgaris ◽

Seed Germination ◽

Common Bean ◽

Seedling Growth ◽

Dry Weight ◽

Germination Percentage ◽

Phaseolus Vulgaris L ◽

Randomized Design ◽

Dry Biomass ◽

Secondary Roots

Saline soils contain multiple types of salt, each of them may exert a different effect on seed germination and seedling growth. The aim of this study is to assess the effects of five types of salt on the seed germination and radicle establishment of common bean (Phaseolus vulgaris L. var. Djedida). The experiment was set out as a factorial experiment based on completely randomized design with four replications of ten seeds for the seed germination and twelve replicates for the seedling growth. We used five kinds of salts (NaCl, Na2SO4, CaCl2, CaCO3 and KCl) with concentrations of 0, 100, 200 and 300 mM. Seeds were incubated in Petri dishes at 25°C, in the dark, for 10 days. The results of analysis of variance indicated that the effects of salt types and concentrations, and their interaction effect were significant in all measured traits (P< 0.01). However, no significance effect was found on secondary roots number and seedlings dry biomass with CaCO3 treatment solution. According to the results, the inhibitory effects of the five salt types differed significantly. Indeed, germination of common bean seeds by various salts were in the order of NaCl > KCl > CaCO3 > Na2SO4 > CaCl2. However, the taproot length, the number of secondary roots and the seedlings dry weight by various salts were in the order of CaCO3 > KCl > NaCl > CaCl2 > Na2SO4. The effect of salt concentration was also obvious. The reduction in dry biomass of cotyledons is proportional to germination rates and to the development of seedlings in dry biomass and in size. Seeds of P. vulgaris var. Djedida were able to germinate under all concentrations of the various types of salt. The lowest final germination percentage (FGP) was obtained under 300 mM of all salts recording the following values: CaCO3 - 60%, NaCl - 60%, KCl - 52.5%, Na2SO4 - 50% and CaCl2 - 27.5%. During germination stage, the radicle emergence would be controlled by the environment osmolarity, while the later growth of the seedling would be limited by the reserve mobilization.

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Effects of temperature and moisture stress on the germination of diverse common bean genotypes

Canadian Journal of Plant Science ◽

10.4141/cjps93-091 ◽

1993 ◽

Vol 73 (3) ◽

pp. 697-702 ◽

Cited By ~ 6

Author(s):

P. Hucl

Keyword(s):

Phaseolus Vulgaris ◽

Seed Germination ◽

Low Temperature ◽

Common Bean ◽

Germination Rate ◽

Moisture Stress ◽

Phaseolus Vulgaris L ◽

Percent Germination ◽

Response To Temperature ◽

Temperature Water

Seed germination of diverse common bean (Phaseolus vulgaris L.) genotypes was evaluated under controlled suboptimal conditions. Initially, 16 genotypes were tested at 12 and 16 °C. A subset of genotypes was subsequently germinated in distilled water or in polyethylene glycol solutions with water potentials (WP) of either −0.4 or −0.8 MPa at temperatures of 22, 26 or 34 °C. Genotypes did not respond consistently to low temperature stress, as indicated by significant (P < 0.05) crossovers in genotype ranking for percent germination from one temperature (12 °C) to the next (16 °C). Genotypes differed in median germination time (GT50) and estimated maximum germination rate. Genotypes with thinner seeds germinated better than wide-seeded genotypes under low-temperature conditions. Seed germination was reduced by 10 percentage units at a WP of −0.4 MPa and was virtually nil at a WP of −0.8 MPa. GT50 was reduced by 30% at 26 versus 22 °C but delayed by 80% when the WP was lowered from 0 to −0.4 MPa. Similarly, maximum germination rate increased with temperature but decreased with WP. Based on the germplasm evaluated in this study, common bean genotypes differ in seed germination response to temperature and moisture stress. Key words: Common bean, Phaseolus vulgaris L., germination, temperature, water potential

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