THE EFFECT OF OVULE POSITION ON THE FREQUENCY OF HYBRID AND INBRED SEED IN FABA BEAN

1990 ◽  
Vol 70 (1) ◽  
pp. 79-82 ◽  
Author(s):  
G. DUC ◽  
G. G. ROWLAND
Keyword(s):  
Vicia Faba ◽  
Seed Production ◽  
Faba Bean ◽  
Plant Stress ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
Vicia Faba L ◽  
Hybrid Seeds ◽  
Ovary Position ◽  
Ovule Position

The effect of ovule and ovary position on the frequency of hybrid seed production of faba bean (Vicia faba L.) was measured at Dijon, France and Saskatoon, Canada. Even though there was far greater ovule fertilization frequency at Dijon (72%) than at Saskatoon (30%) the frequency of hybrid seed was significantly greater at Saskatoon (24%) than at Dijon (15%). Neither the position of the ovule within the ovary nor the position of the raceme on the stem had any effect on the production of hybrid seed. However, at both locations the highest position within a raceme produced a significantly greater proportion of hybrid seeds. It is proposed that under the effect of intra- or inter-plant stress, developing ovaries containing hybrid embryos may be selectively retained.Key words: Vicia faba, ovule fertilization, outcrossing, faba bean

scholarly journals Blend wheat AL-type hybrid and using SSRs to determine the purity of hybrid seeds

2021 ◽  
Author(s):  
Yingbin Nie ◽  
Dezhen Kong ◽  
Fenjuan Cui ◽  
Wei Sang ◽  
Peiyuan Mu ◽  
...  
Keyword(s):  
Seed Production ◽  
Wheat Yield ◽  
Regression Equation ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
Male Sterile ◽  
Purity Testing ◽  
Hybrid Seeds ◽  
Seed Setting Rate ◽  
Simple Sequence

Heterosis is a promising approach to increase wheat yield from a limited planting area. In this study, a fine quality restorer line 99AR144-1 and three stable male sterile lines, AL18A, AL36A and AL20A, were assigned as male and female, respectively. Seeds of the wheat line 99AR144-1 and three male sterile lines were mixed according to different proportions and then planted at an experimental farm at the Xinjiang Academy of Agri-Reclamation Sciences from 2013 to 2016. When the mixed sowing ratios of combinations 2 (AL36A × 99AR144-1) and 3 (AL20A × 99AR144-1) were 6 to 8%, the seed production yields were higher than the control; the yield of hybrid seed production increased by 98.8 and 19.9%, respectively. This increase was attributed to a rise in the outcrossing seed setting rate. Further, this study used the Xbarc-8 SSR (simple sequence repeat) molecular marker to identify the purity of blend hybrid seeds and establish a regression equation for hybrid seed purity testing. The coefficient of the regression equation were 0.9878 and 0.9689 respectively, which shows that the purity of hybrids can be accurately predicted by using this equation. This method can quickly and accurately identify the seed purity in mixed seed production.

scholarly journals Inbred and hybrid seed production potentiality of tomato (Lycopersicon esculentum) genotypes and their yield performance during summer

2014 ◽  
Vol 39 (1) ◽  
pp. 13-21 ◽  
Author(s):  
L Yesmin ◽  
MS Islam ◽  
MM Rahman ◽  
MN Uddin ◽  
S Ahmad
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Agricultural Research ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
Cross Combination ◽  
Yield Performance ◽  
Hybrid Seeds

An investigation was made with a view to estimating inbred and hybrid seed production potentiality as well as fruit yield potentiality of 11 tomato genotypes and their hybrids during November 2009 to September 2010 at Bangladesh Agricultural Research Institute, Gazipur. The highest number of fruits per plant was recorded from the genotype C41 (59.66). The highest fruit yield per plant (2.94 kg) was recorded from the genotype WP8 followed by that of C11 (2.93 kg). In respect of seed yield performance, the genotype C51 produced the highest number of seeds per fruit (47.66), while the line C41 produced the highest seed yield per plant (7.66 g). Per hectare seed yield varied from 263.0 kg (C41) to 53.79 kg (MP5). The highest per plant (6.33 g) and per hectare (139.26 kg) hybrid seeds were produced by the cross combination of C11 X C51 followed by that of WP8 × C11. The fruit weight and fruit yield of the hybrids were much higher compared to their superior parents during the summer season. Among the six tomato hybrids, WP7 X C51 had the highest fruit weight (67.60 g) and produced the highest fruit yield per plant (1.43 kg) followed by BARI Hybrid Tomato-4 (1.24 kg). The other two hybrids, WP8 X C51 (1.08 kg/plant) and C51 X WP10 (1.1 kg/plant) were also found promising. DOI: http://dx.doi.org/10.3329/bjar.v39i1.20057 Bangladesh J. Agril. Res. 39(1): 13-21, March 2014

Flowering phenology of Populustremuloides and P. grandidentata and the potential for hybridization

1980 ◽  
Vol 10 (2) ◽  
pp. 218-223 ◽  
Author(s):  
Kurt S. Pregitzer ◽  
Burton V. Barnes
Keyword(s):  
Gene Flow ◽  
Flowering Time ◽  
Seed Production ◽  
Flowering Phenology ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
Strong Potential ◽  
Hybrid Seeds ◽  
Northern Michigan

Flower phenologies of Populustremuloides, P. grandidentata, and P. ×smithii were monitored for 39 clones in southeastern Lower Michigan, U.S.A., and 73 clones in northern Lower Michigan. In southeastern Michigan the two species were generally found to be reproductively isolated where average flowering times were compared. Populustremuloides exhibited greater intra- and interclonal variation than P. grandidentata and flowered for a significantly longer period. However, overlap in flowering times occurred in southeastern Michigan indicating a potential for hybridization and gene flow. Populusgrandidentata female clones pollinated by P. tremuloides males were most likely to produce hybrid seeds. Small, late-developing female catkins of P. tremuloides also showed strong potential for hybrid seed production. Natural F1 hybrids were intermediate in flowering time between the parents. Therefore, phenology is not a complete barrier to natural backcrossing in southeastern Lower Michigan. Little overlap occurred in northern Michigan, thus strongly limiting the potential for hybridization.

scholarly journals Proportion of parental line (A receptor and R pollinator) seeds improving rice hybrid production

2020 ◽  
Vol 43 ◽  
pp. 45629
Author(s):  
Adriano Stephan Nascente ◽  
Paulo Ricardo Reis Fagundes ◽  
Vitor Henrique Vaz Mondo ◽  
Mabio Chrisley Lacerda
Keyword(s):  
Seed Production ◽  
Grain Quality ◽  
Hybrid Seed ◽  
Limiting Factors ◽  
High Price ◽  
Parental Line ◽  
Rice Grain ◽  
Hybrid Seed Production ◽  
Rice Hybrid ◽  
Hybrid Seeds

The high price of rice hybrid seeds is one of the major limiting factors for increasing the use of this technology. An important step toward minimizing high rice hybrid seed cost is developing techniques that help improve hybrid seed yield. Our goal was to determine the proportion of seeds of line A (receptor) and line R (pollinator) that, under mixed sowing, would allow optimized rice hybrid seed production and grain quality. Trials were performed for two growing seasons in the southern region of Brazil. The cultivar INTA Puita was used as a pollinator and line 464 A as receptor. The experimental design was a randomized block with four replications. Treatments included six proportions of seeds of the INTA Puita (0.75, 1.5, 3.0, 6.0, 12.0, and 24.00%) mixture with seeds of line 464 A (99.25, 98.50, 97.00, 94.00, 88.00, and 76%, respectively). By increasing the percentage of the pollinator seeds (INTA Puita CL) from 0.75 to 24% in the mixture with the receptor (line 464 A), we increased yield of INTA Puita CL grains (7 to 2676 kg ha-1) and hybrid seeds (279 to 1493 kg ha-1). The mixture of different proportions of INTA Puita CL (pollinator) with the receptor (line 464 A) did not change the rice grain quality or the production cost. The cost of production per kg of hybrid seeds decreased quadratically with the increasing percentage of the pollinator (INTA Puita CL), from US$ 6.71 to US$ 1.23. Revenue achieved from the commercialization of the grains of INTA Puita CL with hybrid seeds 464 A showed quadratic increases with the increased percentage of INTA Puita cl in the mixture. Our results showed a potential technique that could be used to improve hybrid seed production, reduce cost per kg of hybrid seed and improve revenue from producing rice hybrid seeds.

Assessment of soil fertility augmenting potential of faba bean (Vicia faba L.) germplasm and their performance

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
Anil Kumar Singh ◽  
Rashmi Yadav ◽  
M.K. Meena ◽  
Y.J. Khan
Keyword(s):  
Soil Fertility ◽  
Vicia Faba ◽  
Faba Bean ◽  
Climate Scenario ◽  
Climatic Conditions ◽  
Third Place ◽  
Changing Climate ◽  
Vicia Faba L ◽  
Unique Ability

Faba bean (Vicia faba L.) maintain third place with respect to area and production among legume. Its unique ability to excel under all most all type of climatic conditions, it is one of the best performing crops under changing climate scenario. Its soil fertility augmenting potential and their performance was evaluated for two years with 73 accessions collected from Bihar. This study provides glimpses of scope and magnitude of soil fertility improving potential of faba bean (Vicia faba L.)

scholarly journals Identification of tolerance to metribuzin and imazethapyr herbicides in faba bean ( Vicia faba L.)

Crop Science ◽  
2021 ◽  
Author(s):  
Lynn Abou Khater ◽  
Fouad Maalouf ◽  
Somanagouda B. Patil ◽  
Rind Balech ◽  
Diana Nacouzi ◽  
...  
Keyword(s):  
Vicia Faba ◽  
Faba Bean ◽  
Vicia Faba L

scholarly journals Enhanced Abiotic Stress Tolerance of Vicia faba L. Plants Heterologously Expressing the PR10a Gene from Potato

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 173
Author(s):  
Abeer F. Desouky ◽  
Ahmed H. Ahmed ◽  
Hartmut Stützel ◽  
Hans-Jörg Jacobsen ◽  
Yi-Chen Pao ◽  
...  
Keyword(s):  
Salt Stress ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Vicia Faba ◽  
Faba Bean ◽  
Abiotic Stress Tolerance ◽  
Wild Type ◽  
Stress Injury ◽  
Bean Plants ◽  
Vicia Faba L

Pathogenesis-related (PR) proteins are known to play relevant roles in plant defense against biotic and abiotic stresses. In the present study, we characterize the response of transgenic faba bean (Vicia faba L.) plants encoding a PR10a gene from potato (Solanum tuberosum L.) to salinity and drought. The transgene was under the mannopine synthetase (pMAS) promoter. PR10a-overexpressing faba bean plants showed better growth than the wild-type plants after 14 days of drought stress and 30 days of salt stress under hydroponic growth conditions. After removing the stress, the PR10a-plants returned to a normal state, while the wild-type plants could not be restored. Most importantly, there was no phenotypic difference between transgenic and non-transgenic faba bean plants under well-watered conditions. Evaluation of physiological parameters during salt stress showed lower Na+-content in the leaves of the transgenic plants, which would reduce the toxic effect. In addition, PR10a-plants were able to maintain vegetative growth and experienced fewer photosystem changes under both stresses and a lower level of osmotic stress injury under salt stress compared to wild-type plants. Taken together, our findings suggest that the PR10a gene from potato plays an important role in abiotic stress tolerance, probably by activation of stress-related physiological processes.

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