Fruit size is one of the most important agronomic characters,which is mainly determined by cell number and cell size.However,our current knowledge about pear is largely unknown.Through counting of pear mesocarp cells ...Fruit size is one of the most important agronomic characters,which is mainly determined by cell number and cell size.However,our current knowledge about pear is largely unknown.Through counting of pear mesocarp cells at different stages,we found that the cell number,rather than the cell size,is responsible for the differences between small- and large-fruited cultivars.Fruit weight-2.2(fw2.2) is an important quantitative trait locus(QTL) affecting fruit weight in tomato and functions as a negative regulator in carpel cell division.To get more insights into this QTL in pear fruit development,we isolated two putative homologous fw2.2 genes,which were designated as fw2.2-like(PbFWL) genes.PbFWLs encode Cys-rich proteins with the CCXXXXCPC motif and belong to the PLAC8 superfamily.In addition,results from the subcellular localization indicated that PbFWLs were localized in the plasma membrane.The expression profile of the PbFWL genes by qRT-PCR showed they expressed higher in small-sized fruit cultivar than that in large-sized fruit cultivar during the cell division period.In summary,our data suggest that these two PbFWLs might be negatively related to the cell division in pear fruit.展开更多
An induced polyploid plant through colchicine treatment offers probably the best scope for improvement in flower size and fruit weight.Thus,in the present study,an attempt was made to induce polyploidy in Cape goosebe...An induced polyploid plant through colchicine treatment offers probably the best scope for improvement in flower size and fruit weight.Thus,in the present study,an attempt was made to induce polyploidy in Cape gooseberry using colchicine with the objective of creating more genetic variability.The colchicine concentrations were used as 0.10%(C1),0.20%(C2)and 0.40%(C3)for the duration 12(H1),24(H2)and 36(H3)hours for each concentration with seedling apex dip method(M1),cotton plug method(M2)and lanolin paste method(M3).The plants treated with 0.10%of colchicine by cotton plug method for 12 h showed the better performance during the years 2017-2018 and 2018-2019 in respect of more delay in the flower bud emergence(54 d and 53 d from the date of transplanting),anthesis(19 d and 20 d from the first appearance of bud to full anthesis of flower)and fruit setting(8.00 d and 9.00 d from the date of anthesis),bigger flower size(2.93 cm2 and 3.00 cm2)than the untreated plants.The lower percentage of pollen viability(40.33%and 40.67%)was noticed in the same treatment in comparison to control(70.33%and 72.33%).The fruit maturity was also extended(59 d and 60 d from the date of fruit set)with bigger sized fruits(length:2.53 cm and 2.57 cm,breadth:2.27 cm and 2.33 cm)as well as more fruit weight(8.70 g and 8.33 g)by the application of colchicine at 0.10%with cotton plug method for 12 h.On the basis of results obtained,the application of colchicine at 0.10%for 12 h duration with cotton plug method was found to be the best and effective treatment for induction of polyploidy as well as more flower size and fruit weight in Cape gooseberry.展开更多
Background'.Increased physical activity and fruit and vegetable(FV)intake are typically suggested to counter obesity.Sustained behavior change in those areas has,however,been poor,possibly because of a lack of und...Background'.Increased physical activity and fruit and vegetable(FV)intake are typically suggested to counter obesity.Sustained behavior change in those areas has,however,been poor,possibly because of a lack of understanding of the effects of psychosocial factors.Using data from previous research,this study aimed to better define the role of physical activity and FV intake in short;and long-term weight loss via changes in malleable psychosocial mediators and moderators.Methods:Women who were obese(n=183;age=50.0±7.9 years;body mass index=35.2±3.2 kg/m2,mean±SD)and who previously participated in 3 different community-based behavioral weight-loss treatments were assessed over 2 years.Changes in FV intake,physical activity,sei^regulation of physical activity and eating(aggregated),negative mood,and weight were measured over 6 and 24 months.Results'.Changes in each variable over both 6 and 24 months were significant(all p values<0.001).The FV intake to the weight-related caloric intake relationship(β=.0.30,p<0.001)was significantly mediated by selfregulation change over 6 months.The physical activity to weightchange relationship(β=.0.46,p<0.001)was significantly mediated by both sei±regulation and mood change over 24 months.Physical activity,itself,accounted for only 16%of weight-related caloric expenditure differences.Changes in physical activity and FV intake were each independent predictors of weight change over 24 months(overall R2=0.50,p<0.001).Conclusion-.Findings clarified theory-based targets for weight-management treatments and suggested that future weight-loss treatments strongly focus on developing self-regulatory skills to address barriers to behavioral changes.展开更多
The objective of the present study was to identify dietary parameters for predicting body weight change (ΔBW) in Mexican-born women (Mexicans) following immigration to Quebec City, Canada. Methods: Changes in fruit (...The objective of the present study was to identify dietary parameters for predicting body weight change (ΔBW) in Mexican-born women (Mexicans) following immigration to Quebec City, Canada. Methods: Changes in fruit (ΔF), vegetable (ΔV), fruit and vegetable (ΔFV), and fat (ΔFat) intake were assessed according to post-immigration periods (1-5 years, 6-10 years, 11-20 years) using a food frequency questionnaire (FFQ). Anthropometric measures were also conducted in 87 Mexicans (study group) and 88 native-born Quebecers (comparison group) aged 18-65 years. Associations were calculated using full and partial robust regression models adjusting for potential confounders (origin, education, income, age, length of residence in Quebec City). Results: There was no difference in ΔBW between the groups. Body weight (BW) increased significantly in both Mexican (5.5 ± 0.9 kg, P < 0.0001) and Quebec women (4.7 ± 0.8 kg, P < 0.0001). ΔBW was positively correlated with ΔFat (β = 0.03, P = 0.003), but not correlated with origin, ΔF, or ΔV. ΔBW was negatively associated with education (β = –4.33, P = 0.007) and positively associated with length of residence (β = 0.3, P = 0.003). Partial models indicated ΔF (β = –1.35, P β = –1.04, P = 0.0001), and ΔFV (β = –2.27, P < 0.0001) were associated with origin, whereas net annual household income (β = 0.16, P = 0.04) was positively associated with ΔFat. Conclusions: Change in body weight could be predicted by length of residence, education, and change in fat intake in Mexican immigrant women and native-born Quebecers whereas changes in fruit and vegetable intakes could be predicted by Mexican or Quebec origin.展开更多
[Objectives]The paper was to verify the genetic mechanism of weight per fruit and fruit length in bitter gourd and to provide guidance for formulating breeding strategy.[Methods]In this study,a cross was made between ...[Objectives]The paper was to verify the genetic mechanism of weight per fruit and fruit length in bitter gourd and to provide guidance for formulating breeding strategy.[Methods]In this study,a cross was made between CN19-1 and Thai4-6,and a Fsegregation population was also constructed.The genetic characteristics of weight per fruit and fruit length were analyzed by employing major gene plus polygene mixed genetic model.[Results]The weight per fruit and fruit length showed continuous distribution in Fsegregation population.The optimal model for weight per fruit and fruit length was the same(A-1 model).The major gene additive effect value of weight per fruit was 46.1474,the dominant effect value was-46.1005,and the major gene heritability was 52.47%.The major gene additive effect value of fruit length was 2.456,the dominant effect value was-2.455,and the major gene heritability was 52.52%.The results showed that weight per fruit and fruit length were mainly controlled by a pair of major genes.[Conclusions]This study can provide a theoretical basis for bitter gourd breeding.展开更多
Recently,the fundamental problem with Hybrid Mobile Ad-hoc Net-works(H-MANETs)is tofind a suitable and secure way of balancing the load through Internet gateways.Moreover,the selection of the gateway and overload of th...Recently,the fundamental problem with Hybrid Mobile Ad-hoc Net-works(H-MANETs)is tofind a suitable and secure way of balancing the load through Internet gateways.Moreover,the selection of the gateway and overload of the network results in packet loss and Delay(DL).For optimal performance,it is important to load balance between different gateways.As a result,a stable load balancing procedure is implemented,which selects gateways based on Fuzzy Logic(FL)and increases the efficiency of the network.In this case,since gate-ways are selected based on the number of nodes,the Energy Consumption(EC)was high.This paper presents a novel Node Quality-based Clustering Algo-rithm(NQCA)based on Fuzzy-Genetic for Cluster Head and Gateway Selection(FGCHGS).This algorithm combines NQCA with the Improved Weighted Clus-tering Algorithm(IWCA).The NQCA algorithm divides the network into clusters based upon node priority,transmission range,and neighbourfidelity.In addition,the simulation results tend to evaluate the performance effectiveness of the FFFCHGS algorithm in terms of EC,packet loss rate(PLR),etc.展开更多
Mandarin (Citrus reticulata Blanco) is a promising fruit crop gaining popularity for its human nutrition and economic importance in Nepal. The qualitative losses during pre-harvest stage hinder the productivity and su...Mandarin (Citrus reticulata Blanco) is a promising fruit crop gaining popularity for its human nutrition and economic importance in Nepal. The qualitative losses during pre-harvest stage hinder the productivity and subsequently shorten the on-tree storability. An experiment was conducted to assess the effect of gibberellic acid on quality and shelf life of the mandarin fruit. GA<sub>3</sub> at 10, 20, and 30 ppm as against of control were evaluated. Observations on fruit weight (g), fruit firmness (kg/cm<sup>2</sup>), rind colour (1 - 5 index), juice recovery (%), TSS/acid ratio, PLW (%), decay loss (%), and ascorbic acid (mg/100 ml) were recorded at three harvesting dates i.e. 20 Nov, 5 Dec, and 20 Dec and storage condition. It has been revealed that the fruits treated with GA<sub>3</sub> at 20 ppm retained higher fruit weight (128.6 g), more firmness (3.54 kg/cm<sup>2</sup>), better juice recovery (57.75%), and greater TSS/acid ratio (21.24) at the end of study (20 December). The PLW was found less with GA<sub>3</sub> at 30 ppm in both ambient (5.17%) and cellar (6.69%) condition as against untreated fruits (9.52% and 11.76%). Similarly, the decay loss was minimum in the fruits treated with GA<sub>3</sub> at 30 ppm both with ambient (1.02%) and cellar condition (8.21%) as against control with ambient (5.54%) and cellar (21.58%).展开更多
This study investigated the relationships between fruit size and other fruit quality components in “Fuyu” persimmon. The flower buds were thinned to leave one or two buds per bearing shoot in mid-May. All fruits wer...This study investigated the relationships between fruit size and other fruit quality components in “Fuyu” persimmon. The flower buds were thinned to leave one or two buds per bearing shoot in mid-May. All fruits were harvested on November 12 and they were divided into six size classes by fresh weight. The length/diameter (L/D) ratio and flesh firmness significantly decreased as fruit size increased. Large fruits had a redder skin color with more seeds than small ones. There was a strong negative relationship between fruit size and the L/D ratio (R2 = 0.741, p ≤ 0.01) and firmness (R2 = 0.604, p ≤ 0.01). Skin color and number of seeds per fruit were positively related to fruit size, especially skin color where the relationship was highly positive (R2 = 0.771, p ≤ 0.01). There was a weak, but non-significant positive relation between fruit size and soluble solids. P, K, and Ca concentrations significantly decreased with increasing fruit size. Highly negative relationships were found between fruit size and fruit P (R2 = 0.393, p ≤ 0.01), K (R2 = 0.446, p ≤ 0.01), and Ca (R2 = 0.417, p ≤ 0.01) concentrations. Fruit N and Mg concentrations were not affected by fruit size. It was concluded that fruit size is related to shape, coloration, flesh firmness, and number of seeds per fruit, affecting concentrations of some mineral nutrients in fruits.展开更多
基金supported by the National High-Tech Researchand Development Program of China(2011AA10020604)the Pomology Major Projects of Xinjiang Uygur Autonomous Region of China(201130102-1)the Special Research Projects of National Forestry Industry of Public Benefit,China(201304701-1)
文摘Fruit size is one of the most important agronomic characters,which is mainly determined by cell number and cell size.However,our current knowledge about pear is largely unknown.Through counting of pear mesocarp cells at different stages,we found that the cell number,rather than the cell size,is responsible for the differences between small- and large-fruited cultivars.Fruit weight-2.2(fw2.2) is an important quantitative trait locus(QTL) affecting fruit weight in tomato and functions as a negative regulator in carpel cell division.To get more insights into this QTL in pear fruit development,we isolated two putative homologous fw2.2 genes,which were designated as fw2.2-like(PbFWL) genes.PbFWLs encode Cys-rich proteins with the CCXXXXCPC motif and belong to the PLAC8 superfamily.In addition,results from the subcellular localization indicated that PbFWLs were localized in the plasma membrane.The expression profile of the PbFWL genes by qRT-PCR showed they expressed higher in small-sized fruit cultivar than that in large-sized fruit cultivar during the cell division period.In summary,our data suggest that these two PbFWLs might be negatively related to the cell division in pear fruit.
文摘An induced polyploid plant through colchicine treatment offers probably the best scope for improvement in flower size and fruit weight.Thus,in the present study,an attempt was made to induce polyploidy in Cape gooseberry using colchicine with the objective of creating more genetic variability.The colchicine concentrations were used as 0.10%(C1),0.20%(C2)and 0.40%(C3)for the duration 12(H1),24(H2)and 36(H3)hours for each concentration with seedling apex dip method(M1),cotton plug method(M2)and lanolin paste method(M3).The plants treated with 0.10%of colchicine by cotton plug method for 12 h showed the better performance during the years 2017-2018 and 2018-2019 in respect of more delay in the flower bud emergence(54 d and 53 d from the date of transplanting),anthesis(19 d and 20 d from the first appearance of bud to full anthesis of flower)and fruit setting(8.00 d and 9.00 d from the date of anthesis),bigger flower size(2.93 cm2 and 3.00 cm2)than the untreated plants.The lower percentage of pollen viability(40.33%and 40.67%)was noticed in the same treatment in comparison to control(70.33%and 72.33%).The fruit maturity was also extended(59 d and 60 d from the date of fruit set)with bigger sized fruits(length:2.53 cm and 2.57 cm,breadth:2.27 cm and 2.33 cm)as well as more fruit weight(8.70 g and 8.33 g)by the application of colchicine at 0.10%with cotton plug method for 12 h.On the basis of results obtained,the application of colchicine at 0.10%for 12 h duration with cotton plug method was found to be the best and effective treatment for induction of polyploidy as well as more flower size and fruit weight in Cape gooseberry.
基金funded in part by the Thrivent Foundation Let’s Get Healthy grant
文摘Background'.Increased physical activity and fruit and vegetable(FV)intake are typically suggested to counter obesity.Sustained behavior change in those areas has,however,been poor,possibly because of a lack of understanding of the effects of psychosocial factors.Using data from previous research,this study aimed to better define the role of physical activity and FV intake in short;and long-term weight loss via changes in malleable psychosocial mediators and moderators.Methods:Women who were obese(n=183;age=50.0±7.9 years;body mass index=35.2±3.2 kg/m2,mean±SD)and who previously participated in 3 different community-based behavioral weight-loss treatments were assessed over 2 years.Changes in FV intake,physical activity,sei^regulation of physical activity and eating(aggregated),negative mood,and weight were measured over 6 and 24 months.Results'.Changes in each variable over both 6 and 24 months were significant(all p values<0.001).The FV intake to the weight-related caloric intake relationship(β=.0.30,p<0.001)was significantly mediated by selfregulation change over 6 months.The physical activity to weightchange relationship(β=.0.46,p<0.001)was significantly mediated by both sei±regulation and mood change over 24 months.Physical activity,itself,accounted for only 16%of weight-related caloric expenditure differences.Changes in physical activity and FV intake were each independent predictors of weight change over 24 months(overall R2=0.50,p<0.001).Conclusion-.Findings clarified theory-based targets for weight-management treatments and suggested that future weight-loss treatments strongly focus on developing self-regulatory skills to address barriers to behavioral changes.
文摘The objective of the present study was to identify dietary parameters for predicting body weight change (ΔBW) in Mexican-born women (Mexicans) following immigration to Quebec City, Canada. Methods: Changes in fruit (ΔF), vegetable (ΔV), fruit and vegetable (ΔFV), and fat (ΔFat) intake were assessed according to post-immigration periods (1-5 years, 6-10 years, 11-20 years) using a food frequency questionnaire (FFQ). Anthropometric measures were also conducted in 87 Mexicans (study group) and 88 native-born Quebecers (comparison group) aged 18-65 years. Associations were calculated using full and partial robust regression models adjusting for potential confounders (origin, education, income, age, length of residence in Quebec City). Results: There was no difference in ΔBW between the groups. Body weight (BW) increased significantly in both Mexican (5.5 ± 0.9 kg, P < 0.0001) and Quebec women (4.7 ± 0.8 kg, P < 0.0001). ΔBW was positively correlated with ΔFat (β = 0.03, P = 0.003), but not correlated with origin, ΔF, or ΔV. ΔBW was negatively associated with education (β = –4.33, P = 0.007) and positively associated with length of residence (β = 0.3, P = 0.003). Partial models indicated ΔF (β = –1.35, P β = –1.04, P = 0.0001), and ΔFV (β = –2.27, P < 0.0001) were associated with origin, whereas net annual household income (β = 0.16, P = 0.04) was positively associated with ΔFat. Conclusions: Change in body weight could be predicted by length of residence, education, and change in fat intake in Mexican immigrant women and native-born Quebecers whereas changes in fruit and vegetable intakes could be predicted by Mexican or Quebec origin.
基金Hainan Science and Technology Project(ZDYF2020229,ZDKJ2021010)Scientific Research Program of Hainan Key Laboratory of Vegetable Biology and Hainan Key Laboratory for Quality Regulation of Tropical Horticultural Crops[HNZDSYS(YY)-03]。
文摘[Objectives]The paper was to verify the genetic mechanism of weight per fruit and fruit length in bitter gourd and to provide guidance for formulating breeding strategy.[Methods]In this study,a cross was made between CN19-1 and Thai4-6,and a Fsegregation population was also constructed.The genetic characteristics of weight per fruit and fruit length were analyzed by employing major gene plus polygene mixed genetic model.[Results]The weight per fruit and fruit length showed continuous distribution in Fsegregation population.The optimal model for weight per fruit and fruit length was the same(A-1 model).The major gene additive effect value of weight per fruit was 46.1474,the dominant effect value was-46.1005,and the major gene heritability was 52.47%.The major gene additive effect value of fruit length was 2.456,the dominant effect value was-2.455,and the major gene heritability was 52.52%.The results showed that weight per fruit and fruit length were mainly controlled by a pair of major genes.[Conclusions]This study can provide a theoretical basis for bitter gourd breeding.
文摘Recently,the fundamental problem with Hybrid Mobile Ad-hoc Net-works(H-MANETs)is tofind a suitable and secure way of balancing the load through Internet gateways.Moreover,the selection of the gateway and overload of the network results in packet loss and Delay(DL).For optimal performance,it is important to load balance between different gateways.As a result,a stable load balancing procedure is implemented,which selects gateways based on Fuzzy Logic(FL)and increases the efficiency of the network.In this case,since gate-ways are selected based on the number of nodes,the Energy Consumption(EC)was high.This paper presents a novel Node Quality-based Clustering Algo-rithm(NQCA)based on Fuzzy-Genetic for Cluster Head and Gateway Selection(FGCHGS).This algorithm combines NQCA with the Improved Weighted Clus-tering Algorithm(IWCA).The NQCA algorithm divides the network into clusters based upon node priority,transmission range,and neighbourfidelity.In addition,the simulation results tend to evaluate the performance effectiveness of the FFFCHGS algorithm in terms of EC,packet loss rate(PLR),etc.
文摘Mandarin (Citrus reticulata Blanco) is a promising fruit crop gaining popularity for its human nutrition and economic importance in Nepal. The qualitative losses during pre-harvest stage hinder the productivity and subsequently shorten the on-tree storability. An experiment was conducted to assess the effect of gibberellic acid on quality and shelf life of the mandarin fruit. GA<sub>3</sub> at 10, 20, and 30 ppm as against of control were evaluated. Observations on fruit weight (g), fruit firmness (kg/cm<sup>2</sup>), rind colour (1 - 5 index), juice recovery (%), TSS/acid ratio, PLW (%), decay loss (%), and ascorbic acid (mg/100 ml) were recorded at three harvesting dates i.e. 20 Nov, 5 Dec, and 20 Dec and storage condition. It has been revealed that the fruits treated with GA<sub>3</sub> at 20 ppm retained higher fruit weight (128.6 g), more firmness (3.54 kg/cm<sup>2</sup>), better juice recovery (57.75%), and greater TSS/acid ratio (21.24) at the end of study (20 December). The PLW was found less with GA<sub>3</sub> at 30 ppm in both ambient (5.17%) and cellar (6.69%) condition as against untreated fruits (9.52% and 11.76%). Similarly, the decay loss was minimum in the fruits treated with GA<sub>3</sub> at 30 ppm both with ambient (1.02%) and cellar condition (8.21%) as against control with ambient (5.54%) and cellar (21.58%).
文摘This study investigated the relationships between fruit size and other fruit quality components in “Fuyu” persimmon. The flower buds were thinned to leave one or two buds per bearing shoot in mid-May. All fruits were harvested on November 12 and they were divided into six size classes by fresh weight. The length/diameter (L/D) ratio and flesh firmness significantly decreased as fruit size increased. Large fruits had a redder skin color with more seeds than small ones. There was a strong negative relationship between fruit size and the L/D ratio (R2 = 0.741, p ≤ 0.01) and firmness (R2 = 0.604, p ≤ 0.01). Skin color and number of seeds per fruit were positively related to fruit size, especially skin color where the relationship was highly positive (R2 = 0.771, p ≤ 0.01). There was a weak, but non-significant positive relation between fruit size and soluble solids. P, K, and Ca concentrations significantly decreased with increasing fruit size. Highly negative relationships were found between fruit size and fruit P (R2 = 0.393, p ≤ 0.01), K (R2 = 0.446, p ≤ 0.01), and Ca (R2 = 0.417, p ≤ 0.01) concentrations. Fruit N and Mg concentrations were not affected by fruit size. It was concluded that fruit size is related to shape, coloration, flesh firmness, and number of seeds per fruit, affecting concentrations of some mineral nutrients in fruits.