【目的】分析新疆小麦品种资源蛋白质品质性状和贮藏蛋白组分的遗传多样性及其关系,为拓宽新疆小麦品种资源的遗传基础及育种的亲本选配和品种选育提供优质亲本材料。【方法】以303份新疆小麦品种资源为材料,对其蛋白质品质性状和贮藏...【目的】分析新疆小麦品种资源蛋白质品质性状和贮藏蛋白组分的遗传多样性及其关系,为拓宽新疆小麦品种资源的遗传基础及育种的亲本选配和品种选育提供优质亲本材料。【方法】以303份新疆小麦品种资源为材料,对其蛋白质品质性状和贮藏蛋白组分含量进行变异、相关及聚类分析,并计算其遗传多样性指数(H')和隶属函数值,对供试材料进行综合评价。【结果】新疆小麦品种资源蛋白质品质性状和贮藏蛋白组分含量的变异系数范围分别为5.52%—60.99%和9.17%—23.69%,变异系数最大的为8分钟宽度;贮藏蛋白组分含量的变异系数最大为不溶性谷蛋白聚合体含量(UPP);遗传多样性指数分别为1.06—2.15,平均为1.78,其中,面筋指数最大,为2.15,峰值时间最小,为1.06。相关分析、多元回归分析表明,综合评价值(F_(15))可以评价蛋白品质(面筋质量)的优劣;面筋指数(GI)、峰值时间(PT)、8分钟宽度(8 min width)、沉淀值(SV)和不溶性谷蛋白聚合体含量(UPP)指标是评价蛋白品质的重要性状,可在今后的育种中加以应用。经聚类分析,将303份小麦品种资源分为三类,所占比例分别为15.84%、43.23%和40.92%,3个类群中,第Ⅰ类群的综合评价值表现最高,品质指标表现最优,其中,不溶性谷蛋白聚合体百分含量(%UPP)、不溶性谷蛋白聚合体含量(UPP)、面筋指数(GI)、峰值时间(PT)、8分钟宽度(8 min width)、8分钟面积(8 min area)、沉淀值(SV)等7个指标的平均值均显著最高,表明通过F_(15)评价面筋质量的优劣是可靠的。【结论】明确了新疆冬小麦品种资源蛋白质品质性状和贮藏蛋白组分指标的遗传多样性分布特点及关系,筛选出评价蛋白质品质的重要性状,基于综合评价值(F_(15))筛选出一批贮藏蛋白组分与小麦蛋白质品质性状综合表现优异的资源,可在今后的育种中加以利用。展开更多
Biodegradation parameters and kinetic characteristics for pre-treating waste strains of Klebsiella pneu-moniae were studied in laboratory scale with an insulated reactor by an innovative technique,autothermal thermo-p...Biodegradation parameters and kinetic characteristics for pre-treating waste strains of Klebsiella pneu-moniae were studied in laboratory scale with an insulated reactor by an innovative technique,autothermal thermo-philic aerobic digestion(ATAD) . Based on an Arrhenius-type equation,an empirical model was developed to corre-late the removal of total suspended solid(TSS) with the initial TSS concentration,influent reaction temperature,aeration rate and stirring rate. The reaction temperatures of the ATAD system could be raised from the ambient temperatures of 25 °C to a maximum temperature of 65 °C. The exponentials for the initial TSS concentration,aeration rate and stirring rate were 1.579,-0.8175 and-0.6549,respectively,and the apparent activation energy was 6.8774 kJ·mol-1. The correlation coefficient for the pre-exponential factor was 0.9223. The TSS removal effi-ciency predicted by the model was validated with an actual test,showing a maximum relative deviation of 10.79%. The new model has a good practicability.展开更多
In order to screen molecular markers linked to fertility restoring genes and further improve the breeding efficiency of restorer lines, in this study, wheat varieties 18A, 18B and 99AR144-1 were used as experimental m...In order to screen molecular markers linked to fertility restoring genes and further improve the breeding efficiency of restorer lines, in this study, wheat varieties 18A, 18B and 99AR144-1 were used as experimental materials to establish F2 fertility-segregating population. Plant quantitative trait ＂major gene ＋ polygene mixed mo- del＂ separation analysis method and simple sequence repeat （SSR） molecular markers were adopted for genetic analysis of four generations, including the parents （P~ and P2）, and hybrid （G and G） populations. The results show that AL-type fertility restoring gene is controlled by two pairs of additive-dominant-epistatic genes and addi- tive-dominant polygene; two primers linked to fertility restoring genes were selected by SSR molecular markers, including Xgwm95 on chromosome 2A and Barc61 on chromosome 1B, with the linkage distance of 15.0 cM and 18.0 cM, respectively. Based on verification, these two markers are reliable for distinguishing AL-type wheat ste- rile lines and restorer lines.展开更多
文摘【目的】分析新疆小麦品种资源蛋白质品质性状和贮藏蛋白组分的遗传多样性及其关系,为拓宽新疆小麦品种资源的遗传基础及育种的亲本选配和品种选育提供优质亲本材料。【方法】以303份新疆小麦品种资源为材料,对其蛋白质品质性状和贮藏蛋白组分含量进行变异、相关及聚类分析,并计算其遗传多样性指数(H')和隶属函数值,对供试材料进行综合评价。【结果】新疆小麦品种资源蛋白质品质性状和贮藏蛋白组分含量的变异系数范围分别为5.52%—60.99%和9.17%—23.69%,变异系数最大的为8分钟宽度;贮藏蛋白组分含量的变异系数最大为不溶性谷蛋白聚合体含量(UPP);遗传多样性指数分别为1.06—2.15,平均为1.78,其中,面筋指数最大,为2.15,峰值时间最小,为1.06。相关分析、多元回归分析表明,综合评价值(F_(15))可以评价蛋白品质(面筋质量)的优劣;面筋指数(GI)、峰值时间(PT)、8分钟宽度(8 min width)、沉淀值(SV)和不溶性谷蛋白聚合体含量(UPP)指标是评价蛋白品质的重要性状,可在今后的育种中加以应用。经聚类分析,将303份小麦品种资源分为三类,所占比例分别为15.84%、43.23%和40.92%,3个类群中,第Ⅰ类群的综合评价值表现最高,品质指标表现最优,其中,不溶性谷蛋白聚合体百分含量(%UPP)、不溶性谷蛋白聚合体含量(UPP)、面筋指数(GI)、峰值时间(PT)、8分钟宽度(8 min width)、8分钟面积(8 min area)、沉淀值(SV)等7个指标的平均值均显著最高,表明通过F_(15)评价面筋质量的优劣是可靠的。【结论】明确了新疆冬小麦品种资源蛋白质品质性状和贮藏蛋白组分指标的遗传多样性分布特点及关系,筛选出评价蛋白质品质的重要性状,基于综合评价值(F_(15))筛选出一批贮藏蛋白组分与小麦蛋白质品质性状综合表现优异的资源,可在今后的育种中加以利用。
基金Supported by the Doctoral Foundation of Northeast Dianli University (BSJXM-200814)Foundations of Bureau of Jilin Province (2008424)
文摘Biodegradation parameters and kinetic characteristics for pre-treating waste strains of Klebsiella pneu-moniae were studied in laboratory scale with an insulated reactor by an innovative technique,autothermal thermo-philic aerobic digestion(ATAD) . Based on an Arrhenius-type equation,an empirical model was developed to corre-late the removal of total suspended solid(TSS) with the initial TSS concentration,influent reaction temperature,aeration rate and stirring rate. The reaction temperatures of the ATAD system could be raised from the ambient temperatures of 25 °C to a maximum temperature of 65 °C. The exponentials for the initial TSS concentration,aeration rate and stirring rate were 1.579,-0.8175 and-0.6549,respectively,and the apparent activation energy was 6.8774 kJ·mol-1. The correlation coefficient for the pre-exponential factor was 0.9223. The TSS removal effi-ciency predicted by the model was validated with an actual test,showing a maximum relative deviation of 10.79%. The new model has a good practicability.
基金Special Foundation for "12th Five-year" Biological Germplasm Resources Innovation&Functional Gene Discovery and Utilization of Xinjiang Production and Construction Corps(No.2012BB047)"12th Five-year" Breeding Tacking Program of Xinjiang Production and Construction Corps(No.2011BA002)
文摘In order to screen molecular markers linked to fertility restoring genes and further improve the breeding efficiency of restorer lines, in this study, wheat varieties 18A, 18B and 99AR144-1 were used as experimental materials to establish F2 fertility-segregating population. Plant quantitative trait ＂major gene ＋ polygene mixed mo- del＂ separation analysis method and simple sequence repeat （SSR） molecular markers were adopted for genetic analysis of four generations, including the parents （P~ and P2）, and hybrid （G and G） populations. The results show that AL-type fertility restoring gene is controlled by two pairs of additive-dominant-epistatic genes and addi- tive-dominant polygene; two primers linked to fertility restoring genes were selected by SSR molecular markers, including Xgwm95 on chromosome 2A and Barc61 on chromosome 1B, with the linkage distance of 15.0 cM and 18.0 cM, respectively. Based on verification, these two markers are reliable for distinguishing AL-type wheat ste- rile lines and restorer lines.
