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我国油菜品质育种研究的进展与展望 总被引:7,自引:0,他引:7
我国自上个世纪80年代初开展油菜品质育种工作以来,取得了令人瞩目的成绩。本文从传统方法育种和现代生物技术育种两方面阐述了我国油菜品质育种工作的成绩和进展状况,包括双低油菜育种、黄籽油菜育种以及和现代生物技术如小孢子培养技术、原生质体融合技术、分子标记技术、转基因技术相结合的优质油菜品质育种状况,并针对我国油菜品质育种工作的前景作出了展望。 相似文献
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论粮食作物的品质育种 总被引:1,自引:0,他引:1
李宗智 《河北农业大学学报》1984,(1)
最近30年来,我国粮食作物的产量提高了,品质下降了。粮食作物是人畜最重要的食物来源,但其有营养缺陷。粮食作物的品质育种可以提高其营养价值和经济效益,具有很大的实用意义。粮食作物的品质育种不仅重要,而且切实可行,是提高粮食品质的最经济有效的手段。目前我国粮食作物的品质育种迫在眉睫,势在必行。为此,提出加强我国粮食作物品质育种的九条意见。 相似文献
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本文阐述了西藏小麦品质现状,指出了当前品质育种的重要性和紧迫性,对西藏小麦品质育种的方法和思路提出了几点想法和建议。 相似文献
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采用超微粉碎的方法,通过初级粉碎、超音速气流粉碎、行星球磨粉碎和真空干燥等过程将南瓜果肉加工成微纳米级别的超细颗粒,并对不同粒度的南瓜粉进行营养成分的溶出速度和溶出量进行测定。结果表明,随着南瓜粉体粒度减小,粉体溶出速度加快,溶出量增加;中性洗涤纤维含量略有降低、流动性减小、吸湿能力增强。 相似文献
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南瓜莲藕复合果蔬汁制作工艺研究 总被引:2,自引:0,他引:2
[目的]探讨制作南瓜莲藕复合果蔬汁的最佳配方。[方法]在不添加任何添加剂条件下,以南瓜汁和莲藕汁为主要原料,同时添加少量的苹果汁和菠萝汁,运用Mixture-D-optimal设计,以感官评定为响应值,研究南瓜汁、莲藕汁、苹果汁和菠萝汁复合的果蔬汁制作工艺及其体态稳定性。[结果]通过回归方程确定复合果蔬汁最优配方为:南瓜原汁40%、莲藕原汁30%、苹果汁17%和菠萝汁13%,此时感官评定值为6.18,口感易为消费者接受。在南瓜莲藕复合果蔬汁中加入0.02%黄原胶和0.06%果胶,均质后,产品均匀稳定,储藏30d后,产品无分层现象。[结论]通过研究制得营养全面和风味独特的复合果蔬汁。 相似文献
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对氯苯氧乙酸(PCPA)对小南瓜结实性状和果实品质的影响 总被引:1,自引:0,他引:1
[目的]研究PCPA对小南瓜结实性状和果实品质的影响,为冀西北坝上地区农业高效生产和农民增收提供参考。[方法]以自然生长的小南瓜(经人工授粉)为对照,用不同浓度的PCPA处理经人工授粉或未授粉的小南瓜雌花花柱,研究其结实性状和果实品质的变化。[结果]用浓度为138mg/kg的PCPA处理小南瓜未授粉的雌花花柱对增加单果重效果较好;用浓度79mg/kg的PCPA处理小南瓜能显著改善籽粒分配比率,提高净瓜率和果肉厚,利于增加果肉比重;用浓度为50mg/kg的PcPA处理小南瓜经人工授粉的雌花花枉,能显著提高Vc和β-胡萝卜素含量,对果卖品质的改善有良好的促进作用。[结论]低浓度的PCPA对改善小南瓜的结实性状和提高其果实品质起决定性作用。 相似文献
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Root distributions in tillage layers and yields of pumpkin and oil sunflower in an intercropping system 总被引:1,自引:0,他引:1
Junhua Zhang Wei Huang Fenglu Zhang Lifeng Zhang 《Frontiers of Agriculture in China》2009,3(4):388-396
Studies on the distribution of roots of pumpkin and oil sunflower in tillage layers and their relations with their above-ground
biomass in an intercropping system were conducted by digging roots by layers, combined with DT-Scan and the WinRHIZO root
analysis system, during harvest in the plateau of the northwest part of Hebei Province, China. The results of analyzing roots
and ratio of root to shoot showed that oil sunflower had an advantage over pumpkin in the intercropping system. Root dry weight
of oil sunflower in treatments of pumpkin intercropped with one row (J1) and two rows of oil sunflower (J2) was, respectively,
2.5 and 1.83 times that of sole oil sunflower cropping (YD); the root length was 1.25 and 1.27 times, the root surface area
was 1.20 and 1.14 times, and the root volume was 1.53 and 1.44 times that of sole oil sunflower cropping, respectively. As
oil sunflower was dominant in absorbing nutrition and water in the intercropping system, the growth and development of pumpkin
were restricted. Root dry weight of pumpkin in sole cropping (ND) was 1.5 and 1.9 times as much as that in treatments of J1
and J2 in a 0- to 40-cm soil layer, with the root length, surface area, and volume being 1.02 and 1.13, 1.04 and 1.26, 1.22
and 1.22 times that of treatments of J1 and J2, respectively. The root and the above-ground biomass of intercropped pumpkin
with oil sunflower were lower than those in sole pumpkin cropping, while those of oil sunflower were the opposite. Root density
of pumpkin decreased in power function with the soil layers, while it decreased by exponential function in oil sunflower.
It was concluded that sole pumpkin cropping rather than pumpkin-oil sunflower intercropping is the suitable planting regimen
in this area. 相似文献
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【目的】研究“CCS(China Construction Seed)种动源能量波种子处理技术”对南瓜种子生长、产量和品质的影响,筛选处理南瓜种子的最适方法。【方法】以南瓜品种“银冠”为材料,分别设置12、24、36 h的不浸种处理以及浸种8 h后处理12 h,共计4个处理。分析不同处理对南瓜生长发育、产量和品质的影响。【结果】T2处理(不浸种处理24 h)和T3处理(不浸种处理36 h)的南瓜生长期间的株高、茎粗、叶绿素相对含量(SPAD值)指标优于对照处理,果肉中干物质含量、可溶性糖和淀粉含量与对照无明显差异,产量与对照相比分别提高了20.89 %和21.99 %。【结论】使用“CCS种动源”技术处理南瓜种子24和36 h,在保证南瓜品质的前提下,提高南瓜产量具有明显效果。 相似文献