共查询到19条相似文献，搜索用时 218 毫秒
1.
香菇磁生物效应的超微结构研究 总被引：4，自引：1，他引：3
用磁水喷浇香菇能使其增产。用电子显微镜观察发现用磁水喷洗的香菇菌盖的细胞内几乎没有液泡，且糖原颗粒密度增大，而其他细胞器与对照组基本相同。 相似文献
2.
磁水喷浇食用菌增产机理的探讨尤华明（福建林学院资源与环境系南平３５３００１）以一定的流速垂直流经适当强度的磁场的水称为磁场处理水，简称磁水（原称磁化水）。大量的科学实验表明用磁水喷浇食用菌能使其增产１０％～５０％，那么，其增产机理是什么呢？食用菌主要... 相似文献
3.
４～６月桔园管理要点石学根（浙江省科学院柑桔研究所黄岩３１７４００）１保果１．１喷布植物生长调节剂对脐橙、本地早及其它稳果性差的品种或始果树。可在谢花２／３或第１次生理落果末期，用赤霉素５０×１０－６浓度的溶液整株喷布，隔个个月左右再喷１次；或在幼果... 相似文献
4.
灵芝仿野生栽培的两种方法任其云，安秀功，赵振栋，张卿（山东省长清食用菌研究开发中心２５０１００）为了提高人工栽培灵芝的产量和质量，我们采用仿野生栽培方法。现介绍于下。１灵芝菌墙栽培法１．１配料：棉籽皮８５％，麸皮５％，玉米面１０％，水适量。１．２装袋... 相似文献
5.
以灵芝为试材,为探究灵芝菌糠提取液对灵芝菌丝体生长的影响,分别制备菌糠的水提取液和醇提取液,并将2种提取液分别配置成40%、60%、80%和100%4种体积百分比浓度后加入等量的马铃薯综合培养基中培养灵芝菌丝体,记录菌丝萌发天数、菌落直径与菌丝干重,并计算其化感效应值(RI)。结果表明:菌糠不同体积浓度的水提取液均对灵芝菌丝体有抑制作用,当浓度为60%时,菌落直径与对照比最短,菌丝干重最小,其化感效应值最大,分别为-0.156和-0.289;不同体积百分比浓度的菌糠醇提取液则对菌丝的生长均起促进作用,当浓度达到60%时,菌落直径与对照相比最大,菌丝干重最大,其化感效应值最大,分别为0.311和0.483。综合比较,菌糠水提取液能抑制灵芝菌丝体的生长,但抑制作用不强;菌糠醇提取液能促进灵芝菌丝的生长,且化感作用效果比水提取更强。 相似文献
6.
在灵芝生长的转换期喷施福菇肽，能有效地调节灵芝菌体内蛋白酶的代谢过程，抑制灵芝菌体内酸性蛋白酶的活力，提高中性蛋白酶的活力，促进灵芝子实体形成，加速子实体生长，提高营养利用率，既能增加灵芝产量，又能提高灵芝质量。 相似文献
7.
四个灵芝菌株的品比实验 总被引：2，自引：0，他引：2
品比实验表明：灵芝四个菌株在优选的培养基上菌丝生长速度较快,平均为９３８ｍｍ／ｄ,子实体原基形成天数平均为３０７ｄ,子实体原基形成率平均为７７８５％,子实体成熟天数平均为３２４５ｄ,四个菌株之间的差异不显著。四个菌株的鲜芝产量川引１号最高,南韩灵芝最低,两者差异显著;各潮芝之间第１潮芝产量最高,第３潮芝产量最低,两者差异也显著。 相似文献
8.
以灵芝为试材,分别制备灵芝发酵液、灵芝菌丝体及子实体的水提取液,将发酵液和菌丝体提取液分别配制成25%、50%、75%、100%4种体积百分比浓度;灵芝菌盖和菌柄分别配制成40%、60%、80%、100%4种体积百分比浓度后加入等量的PDA平板中培养灵芝菌丝体,记录菌丝萌发天数、菌落直径与菌丝干重,并计算自化感效应值(RI),研究灵芝连作障碍下的菌体自毒作用。结果表明:低浓度的菌丝体水提取液和发酵液促进灵芝菌丝伸长,高浓度的菌丝体水提取液和发酵液抑制菌丝的伸长,但不同浓度的菌丝体和发酵液处理组的菌丝干重的自化感效应值均为负值;不同浓度的灵芝菌柄和菌盖水提取液对灵芝均有较强的自毒作用,表现为抑制菌丝的萌发和菌丝的长势;当浓度为80%时,子实体的菌盖和菌柄水提取液菌落直径和菌丝干重与对照相差最大,自化感效应值最大,其菌落直径的化感效应为分别为-0.494和-0.541,菌丝干重的自化感效应值分别为-0.750和0.808。由此得出,灵芝子实体的水提取液比灵芝菌丝体的水提取液和发酵液有更强的自毒作用。 相似文献
9.
发酵因素对灵芝富硒深层培养的影响 总被引：10，自引：0，他引：10
本文报道了发酵因素对灵芝菌富硒深层培养的影响。研究结果表明：富硒灵芝在２０～３２℃以内、８０～２４０ｒ／ｍｉｎ、ｐＨ５～８均可以生长,其中２６℃、１８０ｒ／ｍｉｎ、ｐＨ自然（６８左右）、接种量１０％为最佳发酵因素;葡萄糖为灵芝富硒深层培养的最佳碳源,蛋白胨加牛肉膏为最佳氮源,磷酸二氢钾加硫酸镁为最适无机盐。 相似文献
10.
11.
AIM: To investigate the proliferation and differentiation patterns of hematopoietic precursors from cord blood in mesenchymal stem cell(MSC) microenvironment. METHODS: MSC was used as feeder cells, the mononuclear cells (MNCs) from cord blood were expanded in MSC microenvironment in the presence of stem cell factor(SCF), FMS-like tyrosine kinase 3 ligand(Flt3L), thrombopoietin (TPO) and IL-6. MNC count and colony-forming cell(CFC) culture were performed at week 1, 2, 3 and 4. RESULTS: (1) The number of MNCs increased and reached 108-fold in group MSC+CK(cytokine), but 7.8-fold in group CK at week 4. (2) CFC increased and reached the peak at week 3, the total number of CFC was higher in group MSC+CK than that in group CK, a rapid decline was observed at week 4. (3) The greatest expansion of erythroid CFC and high proliferative potential colony-forming cells(HPP-CFC) occurred at week 1, went down rapidly and dropped to zero at week 3, expansions in group MSC+CK were greater than that in group CK. (4) Myeloid CFC expanded continuously and the greatest expansion occurred at week 3, and declined at week 4. Myeloid CFC expanded greater in group MSC+CK than that in group CK. (5) CFC number per 104 MNCs reached the peak after one week of expansion, then declined rapidly from week 2, and dropped lower than that before expansion by the end of week 4.CONCLUSION: (1) Expansion ability of hematopoietic precursors from cord blood in MSC microenvironment is better than that in culture system without MSC. (2) Even expansion is performed in MSC microenvironment, differentiation could not be prevented. (3) Expansion of erythroid precursors occurrs in the early stages of ex vivo expansion. Expansion of myelomonocytic precursors lasts longer than that of erythroid. 相似文献
12.
以‘迈田三品青’莴笋为试材,采用叶片喷施的方法,研究了不同植物生长调节剂组合:促长剂-控旺剂-促长剂-控旺剂(T1)、促长剂-矮壮素-促长剂-矮壮素(T2)、赤霉素-控旺剂-赤霉素-控旺剂(T3)、赤霉素-矮壮素-赤霉素-矮壮素(T4)、赤霉素-赤霉素-赤霉素-赤霉素(T5)和喷清水(CK)处理对"三青"莴笋生长和光合作用的影响,以期筛选出能促进"三青"莴笋高效生产的植物生长调节剂组合。结果表明:与CK相比,不同生长调节剂组合均增加了莴笋株高、茎粗、叶片数和单株质量。仅赤霉素处理(T5)的株高、茎粗、叶片数和单株质量前期增长较快,到后期逐渐减缓。而促进剂和抑制剂的交替使用前期生长较慢,而后逐渐增加且超过T5处理。其中第4次喷施后测得T2和T3处理茎粗、叶片数和单株质量较其它处理大,且T2处理叶绿素含量较CK显著增加。综上所述,T2处理为最佳生长调节剂组合,其提高了莴笋光合作用,促进其生长。 相似文献
13.
CPPU对葡萄果实生长发育促进效应的解剖学观察 总被引：2，自引：0，他引：2
对CPPU处理的全球红葡萄果实进行组织形态动态生长研究,结果表明:CPPU处理能促进早期子房膨大生长,子房壁的加厚生长和输导组织的生长.经CPPU处理比对照能提早使幼果进入迅速细胞分裂期,细胞层数增多.10 mg/L的CPPU处理不仅显著增加细胞层数,而且增大了细胞体积,刺激果实膨大的效果较好;15 mg/L的CPPU处理则抑制果实的细胞分裂和体积增大,其主要差异存在于中果皮,在外果皮上差异不明显.在幼果生长期,CPPU处理的细胞体积膨大幅度小于对照;在果实生长中、后期,其膨大幅度则大于对照. 相似文献
14.
为对磁化水灌溉技术的应用提供依据，以日光温室种植黄瓜鲁黄三号为试材，进行磁化水和普通地下水灌溉对比试验，研究磁化水灌溉对黄瓜生长和产量的影响。结果表明：与普通地下水相比较，磁化水灌溉的黄瓜出苗率增加4个百分点，在定植后35 d内株高平均增长13.2 cm、茎粗平均增长0.6 mm；采收期延长26 d，平均单株商品瓜数增加18.2%，产量提高19.6%且达极显著差异水平，黄瓜种植效益突出。 相似文献
15.
针对淡褐奥德蘑的生物学效应和运动能力开展研究,采用磁化水培养基培育淡褐奥德蘑菌株,对比马铃薯培育基试验,结果表明,磁化水培养基能够加快菌丝生长速度;磁化强度试验表明:适当增加磁化强度能够加快菌丝的生长速度,呈现正生物学效应,但过大的磁化强度会对菌丝生长产生抑制作用;淡褐奥德蘑对运动能力的影响主要表现在其具有一定的还原能力和抗氧化性。 相似文献
16.
Peter P. Kalberer 《Scientia Horticulturae》1983,21(1):9-18
The water extracted from casing layer and substrate by the fruit bodies of the first flush of a mushroom culture (Agaricus bisporus) was investigated. In cultures with a 5-cm casing layer, 33–34% of the water in the sporophores came from the casing, and the remainder from the substrate. In cultures with thin casing layers (3–3.5 cm), only 14–15% of the water came from the casing. Fruit bodies from thin layers contained less water than the ones from thicker layers. Fruit bodies from thick casing layers (6 cm) and harvested early took 36–37% of their water from the casing. Mushrooms from the late harvest (caps fully open) took 40–51% of their water from the casing layer and contained more water than early-harvested ones. The sporophores of the first flush extracted more water (g per g substrate) from the top third of the substrate than from the lower layers. 相似文献
17.
以松花菜品种"力禾65天"为试材,采用重力滴灌灌溉方式,设置微咸水灌水梯度3g·L-1(3K)、5g·L-1(5K),以淡水(CK)为对照,研究不同浓度微咸水胁迫对松花菜生长指标、品质及水分利用效率的影响,以期为设施农业中微咸水资源安全利用提供技术支撑。结果表明:在松花菜生长指标方面,随着灌溉水矿化度的升高,苗期松花菜死苗率增大,营养生长末期(莲座期末期)叶片数和花球直径显著降低,5K处理莲座期末叶片数比CK降低34.78%,花球直径比CK降低32.34%;在产量方面,随着灌溉水矿化度含量的升高,松花菜的产量显著下降,5K处理单株产量比CK降低48.31%;在品质方面,可溶性糖、可溶性蛋白质以及维生素C含量随着灌溉水矿化度含量的升高呈现先增加后降低的变化趋势,排序依次为可溶性糖含量3K>5K>CK,维生素C含量3K>5K>CK,可溶性蛋白质含量3K>CK>5K;叶片叶绿素含量和水分利用效率随着灌溉水矿化度含量的升高而降低,变化规律为CK>3K>5K。 相似文献
18.
Arun Chaturvedi Rahul Kamble N.G. Patil Alka Chaturvedi 《Urban Forestry & Urban Greening》2013,12(1):79-87
There are sporadic reports on urban forests in Indian cities. Nagpur is one of the greenest cities of India with 18 per cent of its area under forests and plantations, 17 per cent under cultivation and 2 per cent under water bodies. The present study showed that natural vegetation of the city is very well diversified with a representation of 59 per cent vegetation including 124 trees species belonging to 38 families as compared with the overall district vegetation statistics. Air quality in the city is relatively better with lower SO2 (6 μg/m3), NO2 (18 μg/m3) and Respirable Suspended Particulate Matters (RSPM, 53 μg/m3) as against National Ambient Air Quality Standards (2009) for cities in India of 80, 80 and 100 μg/m3, respectively. It was also noted that the diversity in natural forests which are being protected is greater than the plantations undertaken by the civic authorities and private sector efforts. The study thus demonstrated the positive relationship of the city with diversified vegetation cover for cleaner environment. The analysis is expected to guide formulation of strategies for maintaining green space in the city. 相似文献
19.
LIU Hong-mei ZHEN Guo-hua ZHANG Zhen-xiang CAO Yong YANG Shi-fang XU Yong-jian 《园艺学报》2008,24(5):931-935
AIM: To observe the apoptosis of alveolar wall cells in the papin-induced rat emphysema, and to explore the role of apoptosis of alveolar wall cells in the pathogenesis of emphysema. METHODS: Rats were randomly divided into three groups: normal control group, papain only group, papain+irradiation group. Morphology of lung tissues was assessed. TUNEL assay was used to determine the apoptotic cells. Immunohistochemistry was performed to determine the expression of PCNA, Bax and SP-C in the lung alveolar wall cells. SP-C immunofluorescence stainging was performed to identify the type II alveolar cells in the TUNEL positive cells. RESULTS: Destruction of alveolar wall and loss of the alveolar unit were observed in papain only group and papain+irradiation group. There was significant difference between rats of papain+irradiation group and papain only growp in the mean linear interval (MLI), the number of alveolar counted per unit area (MAN) and mean alveoli area (MAA), respectively (P<0.01). The proliferation index(PI), apoptosis index (AI) and the percentage of Bax in the papain only group and papain+irradiation group were significantly greater than that in the normal control group (P<0.01). However, the percentage of SP-C positive cells was significantly lower in the papain only group and papain+irradiation group compared with the normal control (P<0.01). Moreover, the PI, AI and the percentage of Bax in the papain+irradiation group was higher than those in the papain only group. The percentage of SP-C positive cells in the papain+irradiation group was lower than that in the papain only group. Most of the TUNEL-positive cells expressed the SP-C. CONCLUSION: Apoptosis of rat alveolar wall cells, especially type-II cell may be involved in the pathogenesis of emphysema. Upregulation of Bax expression may lead to alveolar wall cells apoptosis in papain-induced emphysema. 相似文献