家蚕春用新品种九·华×春·早的育成

采用杂交、回交、成对品种系统选育等方法育成了九（９２１） 、华（９２３） 、春（９２２） 、早（９２４）４ 个新品种,经配合力测定组配成四元杂交种九·华×春·早。实验室鉴定、农村试养、蚕种场繁育结果表明该品种强健好养,制种性能好,茧形大而匀整,茧丝品质良好,综合经济性状优良。     

春用家蚕新品种923·925×928·9214的育成

采用杂交育种方法,育成了优质、高产春用家蚕新品种923.925×928.9214。经四川省实验室鉴定和农村鉴定表明:该品种孵化、眠起、上蔟齐一;体质强健好养,蚕体粗壮,茧形大且匀整;产量高,万蚕收茧量、万蚕茧层量、万蚕产丝量分别比对照种菁松×皓月提高7.96%、8.63%、7.38%;茧丝长、解舒率、洁净、鲜毛茧出丝率分别为1 240 m、70.94%、95.25分、18.90%,综合经济性状优良。     

40%乙草胺·乙氧氟草醚乳油防除花生田杂草的效果

为明确40%乙草胺·乙氧氟草醚乳油防除花生田杂草的效果和对花生的安全性,进行了田间小区试验,观察其对花生田杂草的防效和对花生产量的影响。结果表明,40%乙草胺.乙氧氟草醚乳油660～720 ga.i./hm2对马唐、牛筋草、反枝苋、马齿苋等花生田杂草具有较好的防除效果,药后40 d鲜重防效达90%以上,对花生安全。     

狗尾草属4种杂草对550g/L硝磺·莠去津SC的耐受性研究

采用室内生物测定方法研究了金色狗尾草[Setaria glauca（L.）Beauv.]、莠狗尾草[Setaria geniculata（Lam.）Beauv.]、狗尾草[Setaria viridis（L）Beauv.]和大狗尾草（Setaria faberriHerrm.）对除草剂550 g/L硝磺.莠去津SC的耐受性差异。结果表明：狗尾草属的不同种对550 g/L硝磺.莠去津的耐受性有较大差异。在相同剂量下,大狗尾草耐受性最强,其次为狗尾草,而金色狗尾草最敏感。550 g/L硝磺.莠去津825 g a.i./hm2剂量下对1叶龄的大狗尾草鲜重抑制率为17.2%,对同叶龄狗尾草、莠狗尾草和金色狗尾草的相应鲜重抑制率分别为99.3%、99.7%和99.8%。随着狗尾草属杂草叶龄的增大,550 g/L硝磺.莠去津对其鲜重抑制率降低。550 g/L硝磺.莠去津对狗尾草属杂草鲜重抑制率较其单一组分硝磺草酮和莠去津单独使用时明显提高。     

不同药剂配方种子包衣对玉米出苗安全性及玉米丝黑穗病和蚜虫的防治效果

应用600g/L吡虫啉FSC、44%吡虫·氟虫腈FSC、300g/L氯氰菊酯FSC、60%戊唑醇FSC、4.23%甲霜·种菌唑ME 5种药剂不同配方包衣‘先玉335’和‘金庆’2个玉米品种种子,验证各药剂对当地玉米出苗的安全性、对玉米苗期生长的影响及对玉米丝黑穗病和玉米蚜虫的防治效果。结果表明,玉米种子包衣后对出苗安全,且有很好的保苗、壮苗、增产作用,增产率最高可达19.6%。吡虫啉400、500、600、800mL+戊唑醇150mL+甲霜·种菌唑100mL组合以及吡虫·氟虫腈240、480mL+戊唑醇150mL+甲霜·种菌唑100mL组合对丝黑穗病防效均可达84%以上。吡虫啉800mL+戊唑醇150mL+甲霜·种菌唑100mL组合以及吡虫·氟虫腈240、480mL+戊唑醇150mL+甲霜·种菌唑100mL组合对‘先玉335’玉米上的蚜虫具有很好的防治效果,防效可达81.6%以上。吡虫啉500、600mL+戊唑醇150mL+甲霜·种菌唑100mL组合以及吡虫·氟虫腈480mL+戊唑醇150mL+甲霜·种菌唑100mL组合对‘金庆’玉米上的蚜虫防治效果较为突出,防效可达81.1%以上。     

Dehydration of gluten matrix as a result of dietary fibre addition – A study on model flour with application of FT-IR spectroscopy

Nowadays, consumers demand dietary fibre-enriched products of appropriate taste, texture, smell and appearance. Unfortunately, addition of the dietary fibre supplements to bread significantly reduces its quality which is connected with changes in the structure of gluten proteins. Structural changes as well as changes in the water state of gluten matrix induced by eight dietary fibres were observed by using Fourier transform infrared spectroscopy. To facilitate this the difference spectra were calculated by subtraction of the control (gluten only) infrared spectrum from the spectra of gluten-fibre mixtures. The presence of positive bands at ca. 1597 and 1235 cm⁻¹ indicated aggregation of gluten proteins into hydrogen bonded β-sheets. These β-sheets can be formed by other β-sheets, antiparallel-β-sheets, β-turns and/or α-helices. The aggregation is probably induced by partial dehydration of gluten matrix due to competition for water molecules between gluten proteins and fibre polysaccharides. This assumption is confirmed by the presence of the negative band at 3237 cm⁻¹ and decrease in the intensity of the band at 3051 cm⁻¹. These bands are assigned to the weak and strong H-bonds in the gluten matrix, respectively. The results indicated that both weak and strong H-bonds are necessary to dough formation of adequate rheological properties.     

家蚕春秋兼用品种“明·丰×春·玉”的育成

利用杂交育种及多元杂交种选配技术,育成了优质、高产、易繁的春秋兼用家蚕新品种明.丰×春.玉。经浙江省家蚕新品种实验室鉴定和农村生产试验表明,该品种孵化、眠起、上蔟齐一,好养,茧形大,万蚕产茧量、万蚕茧层量、5龄1日万蚕茧层量分别比对照品种秋丰×白玉提高5.22%、11.26%、7.72%,解舒丝长、洁净、鲜毛茧出丝率优于对照,蚕种繁育性能优良。2007年该品种通过浙江省农作物品种审定。     

春用多丝量家蚕品种金·兰×铭·晖的育成

采用杂交与系统选育等育种方法,结合春、秋季不同气候条件和叶质条件交替选育技术,兼顾茧丝质和健康性,育成了茧丝质优良的家蚕新品种"金"、"兰"、"铭"、"晖",并采用不完全双列杂交进行配合力测试,筛选出春用多丝量四元杂交组合金·兰×铭·晖。经四川省级实验室及农村区域鉴定表明,该杂交组合饲养容易,产量高,茧层厚,丝量多,丝质优良。在四川省实验室共同鉴定试验中,金·兰×铭·晖的虫蛹统一生命率(95.75%)与对照品种菁松×皓月相当,万蚕收茧量、万蚕茧层量、鲜毛茧出丝率和洁净分别比对照提高6.26%、10.51%、0.63百分点、0.86分,茧丝纤度均方差比对照小5.82%,综合经济性状超过对照品种。该品种于2015年通过四川省家蚕品种审定委员会审定,适宜在四川蚕区及长江中下游蚕区春季饲养。     

A comparison of UVb compact lamps in enabling cutaneous vitamin D synthesis in growing bearded dragons

The effect of exposure to different UVb compact lamps on the vitamin D status of growing bearded dragons (Pogona vitticeps) was studied. Forty‐two newly hatched bearded dragons (<24 h old) were allocated to six treatment groups (n = 7 per group). Five groups were exposed to different UVb compact lamps for two hours per day, with a control group not exposed to UVb radiation. At 120 days of age, blood samples were obtained and concentrations of 25(OH)D₃, Ca, P and uric acid were determined. In addition, plasma 25(OH)D₃ concentration was determined in free‐living adult bearded dragons to provide a reference level. Only one treatment resulted in elevated levels of 25(OH)D₃ compared to the control group (41.0 ± 12.85 vs. 2.0 ± 0.0 nmol/L). All UVb‐exposed groups had low 25(OH)D₃ plasma levels compared to earlier studies on captive bearded dragons as well as in comparison with the free‐living adult bearded dragons (409 ± 56 nmol/L). Spectral analysis indicated that all treatment lamps emitted UVb wavelengths effective for some cutaneous vitamin D synthesis. None of these lamps, under this regime, appeared to have provided a sufficient UVb dose to enable synthesis of plasma 25(OH)D₃ levels similar to those of free‐living bearded dragons in their native habitat.