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鼎顶红5号是以自交系D1-8为母本,以自交系SK2-6为父本配制而成的簇生型朝天椒一代杂种。早熟,生育期170 d(天)左右,株高80 cm左右,始花节位第10～11节;果实短指形,果顶钝尖,果面光滑,纵径7 cm左右,横径0.8 cm左右,青熟果绿色,老熟果红色,辣味强,总辣椒素含量2.36 g · kg-1,VC含量1430 mg · kg-1;坐果能力强,单株结果数16个左右,单果质量4 g左右,每667 m~2鲜椒产量1500 kg左右,易干制;田间对病毒病、疫病和炭疽病的抗性强于对照三樱椒8号,适宜河南及周边地区早春露地或小麦—辣椒间作套种栽培。 相似文献
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铁椒6号是以雄性不育两用系99-35为母本，自交系99-39为父本配制的辣椒一代杂种。果实长灯笼形，果皮绿色，果面较光滑，果长10 cm左右，果肩宽7 cm左右，果肉厚0.35 cm左右，单果质量100~150 g。质脆，商品性好，VC含量1 115 mg?kg-1，可溶性总糖2.70 %，中抗TMV。地膜覆盖栽培每667 m2产量1 900 kg左右，温室栽培每667 m2产量3 000 kg左右，适于温室及露地地膜覆盖栽培。 相似文献
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金迪363是以自交系09FP-125为母本,以自交系FP055为父本配制而成的早中熟番茄一代杂种。无限生长类型,植株生长势强,始花节位为第8～9节,定植至始收79 d(天)左右;果实近圆形,横径8.2 cm左右,纵径6.2 cm左右,成熟果红色,无绿果肩,单果质量240～260 g;可溶性固形物含量3.6%,番茄红素含量59.8 mg · kg-1(FW),VC含量163.0 mg · kg-1(FW),高抗番茄黄化曲叶病毒病、南方根结线虫、烟草花叶病毒病,抗灰叶斑病、叶霉病,每667 m~2产量8?000 kg左右,适合四川平坝地区早春保护地栽培。 相似文献
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‘濮椒6号’是以河南地方品种经多代单株自交定向选择育成的自交系‘0712’为母本,以欧洲引进的大果长灯笼型甜椒经多代自交纯合的自交系‘A-96’为父本配制的杂交1代辣椒品种。全生育期185 d,早熟,始花节位10.3节,生长势强,连续坐果性好,株高59.8 cm,株幅65.1 cm;果实长牛角形,果实纵径20~25 cm,果肩横径4.8 cm,果肉厚度0.36 cm,果实心室数2.9个;100 g果实维生素C含量96.94 mg;青熟果绿色,老熟果红色,果面光滑有光泽,微辣,商品性好;单果质量98.2 g;炭疽病、疫病、青枯病、病毒病的抗性优于对照‘江蔬1号’;早春大棚地膜栽培每667 m~2早期产量和总产量分别为1 500 kg和3 500 kg左右,适宜河南、山东、江苏、安徽及湖北早春保护地栽培。2016年通过国家农作物品种鉴定委员会鉴定。 相似文献
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辣美早是以自交系LJ2161-1-1为母本,自交系LJ1095-2-4为父本配制而成的辣椒杂交1代品种。该品种早熟,始花着生于第8节。成都平原地区早春大棚栽培全生育期170 d左右。株高65~70 cm,株幅78~80 cm,果实线形,果长28~32 cm,果径1.6~1.8 cm,单果质量30 g,果肉厚度0.18~0.2 cm,果实心室数2个。果实维生素C质量分数162.293 mg·100 g-1,辣椒素质量分数1.280 g·kg-1;青熟果绿色,老熟果鲜红色,色泽亮,挂果集中,连续挂果性强,商品性状优良,皮薄味辣,口感好;平均667 m2产量在3300 kg以上,适宜春秋保护地和露地栽培。2020年4月通过农业农村部非主要农作物品种登记。 相似文献
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辣椒新品种航椒3号的选育 总被引：4，自引：0，他引：4
航椒3号是经神舟3号飞船搭载天水羊角椒、甘农线椒种子后,选育的自交系021-1-5和022-2-2做父母本配制而成的辣椒一代杂种。极早熟,始花节位7～9节,从定植至青熟果采收45d左右。果实长羊角形,纵径26～33cm,横径2.2～2.5cm,单果质量30～40g;果面光滑,果基部皱,青熟果绿色,老熟果鲜红色;辣味强,质地细嫩,风味佳,维生素C含量高,品质优。抗辣椒疫病、病毒病、白粉病和耐低温寡照。连续结果性好,产量高,前期产量1200～1600kg/667m2,总产量2500～3500kg/667m2。保护地、露地均可栽培,最适宜保护地早春茬栽培。 相似文献
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衢椒5号是以高代自交系金5-8为母本,以Y802为父本配制而成的早熟辣椒一代杂种。始花节位第9～10节,生长势较强,连续坐果性好,株高约75 cm;果实羊角形,青熟果黄白色,光泽度好,老熟果红色,果长约21 cm,果肩宽约2.2 cm,果肉厚约0.2 cm,单果质量24 g左右,辣味中等;果实总辣椒素含量98.3 mg·kg-1,VC含量520.0 mg·kg-1,氨基酸含量0.80%,田间对炭疽病的抗性强于对照衢椒1号,对黄瓜花叶病毒病(CMV)、烟草花叶病毒病(TMV)、疫病的抗性与对照相当,每667 m2产量2 500 kg左右,适宜浙江省及相似地区保护地栽培。 相似文献
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AIM: To examine the autoantibody against α1-adrenoceptor and its biologic activities during the development of renal hypertension. METHODS: Renal hypertension of rat was achieved by clipped renal artery, the titre of autoantibody to α1-adrenoceptor was detected using ELISA immunoassay. Furthermore, the biological offects of these autoantibodies on cultured cardiomyocytes were also examined. RESULTS: After two weeks of clipping renal arteries, both the frequency of occurrence and the titre of autoantibodies to cardiac α1-adrenergic receptor were significantly increased as compared with the control of pre-treatment. The increased autoantibodies lasted for several weeks and then automatically decreased gradually to the pre-clipping level at 12 weeks. The biological effects of these autoantibodies displayed an "agonistic-like" activities on the beating frequency of cultured neonatal cardiomyocytes. CONCLUSION: Autoantibodies against α1-adrenoceptor may play a role in the elevation of peripheral vascular resistance and in the development of cardiac hypertrophy in rats with renal hypertension. 相似文献
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AIM: Although endovascular radiotherapy inhibits neointimal hyperplasia, the exact alterations induced by β-particles irradiation remain to be elucidated. The objective of this study was to investigate the ability and the cellular mechanism of local β-particles emission from 188Re to inhibit vascular smooth muscle cells (SMCs). METHODS: The SMCs in vitro were irradiated by 188Re with single doses of 2.6 Gy-25.8 Gy. The effects of β-particles on SMCs, such as effective irradiate doses, the period of inhibition for SMCs proliferation, the changes of cell proliferation rate and DNA synthesis rate, cell cycle progression and related gene expression, were investigated by cell count, [3H]-TdR incorporation, cell cycle progression analysis, cell viability and immunocytochemistry, respectivecy. RESULTS: β-particles irradiation with dose of 5.2 Gy could inhibit significantly SMCs proliferation. At dose of 20.6 Gy DNA synthesis inhibitory rate was 92%, SMCs proliferation rate was only 3%. Renoval of 188Re did not abolish the inhibitory effects of β-particles on SMCs proliferation. The expression of P53 was up regulation and PCNA was down regulation after irradiation. CONCLUSION: β-particles from 188 Re was significantly effective and permanent in inhibiting SMCs proliferation, and inhibitory effect was in dose-dependet manner ED50was 5 Gy, the best dose to inhibit SMCs proliferation was 20 Gy. β-particles irradiation induced SMCs to occur G0/G1 arrest, damaged the ability of SMCs reproliferation and led to cell clonogenic death. P53 and PCNA had regulatiory effects on SMCs proliferation after β-particles irradiation. 相似文献
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《International Journal of Fruit Science》2013,13(1):139-156
Abstract This review is based partly on complete articles and partly on abstracts. Three of the 60 articles deal with the total uptake of elements in strawberry plant organs in two different strawberry production systems, both considered as optimal concerning amount and balance of elements. The effect on fruit quality may be dramatic if the level of a particular element is outside this range, but there may also be effects initiated by differences within the optimal range of elements. Most articles refer to product oriented quality, but some focus on consumer oriented quality, as discussed by Shewfelt (1999). The discussion here is on a general basis, so one should keep in mind that there are cultivar differences and that specification of nutrition ideally should mirror the needs of a single cultivar, or a group of cultivars with similar requirements. Also, to get a complete understanding of the subject future reviews should embrace a broader access of information including the effect on plant development of individual elements, such as the role of calcium in fruit firmness and its importance in cell wall structure. However, the intention here is to narrow the information to results that suggest a direct connection between nutrient uptake and fruit quality. 相似文献
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AIM:To study the effect of L-Arg on plasma content of endothelin (ET) and the expression of proto-oncogene c-fos mRNA in the left ventricle of rats with renovascular hypertensive hypertrophy. METHODS: The level of c-fos mRNA were measured by in situ hybridization. The ET in plasma were measured by radioimmunoassay. RESULTS:After eight weeks of treatment with L-Arg, the expression of c-fos decreased markedly (P＜0.01). The ET content in plasma also decreased significantly by L-Arg(P＜0.01).CONCLUSION: Plasma ET content and the expression of c-fos in the left ventricle of rats with renovascular hypertensive hypertrophy could be decreased by L-Arg administration. 相似文献
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Fulé Peter Z. Crouse Joseph E. Heinlein Thomas A. Moore Margaret M. Covington W. Wallace Verkamp Greg 《Landscape Ecology》2003,18(5):465-486
Fire regime characteristics of high-elevation forests on the North Rim of the Grand Canyon, Arizona, were reconstructed from fire scar analysis, remote sensing, tree age, and forest structure measurements, a first attempt at detailed reconstruction of the transition from surface to stand-replacing fire patterns in the Southwest. Tree densities and fire-/non-fire-initiated groups were highly mixed over the landscape, so distinct fire-created stands could not be delineated from satellite imagery or the oldest available aerial photos. Surface fires were common from 1700 to 1879 in the 4,400 ha site, especially on S and W aspects. Fire dates frequently coincided with fire dates measured at study sites at lower elevation, suggesting that pre-1880 fire sizes may have been very large. Large fires, those scarring 25% or more of the sample trees, were relatively infrequent, averaging 31 years between burns. Four of the five major regional fire years occurred in the 1700s, followed by a 94-year gap until 1879. Fires typically occurred in significantly dry years (Palmer Drought Stress Index), with severe drought in major regional fire years. Currently the forest is predominantly spruce-fir, mixed conifer, and aspen. In contrast, dendroecological reconstruction of past forest structure showed that the forest in 1880 was very open, corresponding closely with historical (1910) accounts of severe fires leaving partially denuded landscapes. Age structure and species composition were used to classify sampling points into fire-initiated and non-fire-initiated groups. Tree groups on nearly 60% of the plots were fire-initiated; the oldest such groups appeared to have originated after severe fires in 1782 or 1785. In 1880, all fire-initiated groups were less than 100 years old and nearly 25% of the groups were less than 20 years old. Non-fire-initiated groups were significantly older (oldest 262 years in 1880), dominated by ponderosa pine, Douglas-fir, or white fir, and occurred preferentially on S and W slopes. The mixed-severity fire regime, transitioning from lower-elevation surface fires to mixed surface and stand-replacing fire at higher elevations, appeared not to have been stable over the temporal and spatial scales of this study. Information about historical fire regime and forest structure is valuable for managers but the information is probably less specific and stable for high-elevation forests than for low-elevation ponderosa pine forests.This revised version was published online in May 2005 with corrections to the Cover Date. 相似文献
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《International Journal of Fruit Science》2013,13(3):101-120
Abstract Saskatoon berry (Amelanchier alnifolia Nutt., Rosaceae) and blueberry (Vaccinium corymbosum L., Ericaceae) are substantially equivalent in all characteristics that are important to the consumer, including fruit color, shape, size, nutrition, texture, and uses. In addition, both fruits are native to North America and they have practically identical historical uses and known health benefits. Their composition, processing, nutritional value and metabolism, intended uses, and levels of undesirable substances are compared. 相似文献
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以西双版纳黄瓜和‘华黄5号’黄瓜叶片为试验材料,研究了衰老过程中两种黄瓜叶片叶绿素含量变化及脱镁叶绿素脱镁叶绿酸水解酶基因PPH和脱镁叶绿酸a加氧酶基因PAO的表达。结果表明：随着叶片衰老,叶绿素a和叶绿素b含量显著降低,叶绿素a与叶绿素b的比值在0.5左右,推测叶绿素b的含量可能对黄瓜叶片保绿起到重要作用。荧光定量RT-PCR分析结果显示：PPH和PAO在西双版纳黄瓜叶片生长35 d时表达量最高,分别为5.50和1.86;PPH在‘华黄5号’叶片35 d时表达量最高,为7.14,而PAO在35和45 d表达量都很高,分别为3.90和3.91;PPH和PAO在西双版纳黄瓜叶片中的表达量低于在‘华黄5号’中。 相似文献
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AIM:To observe the effect of simvastatin on the proliferation of vascular smooth muscle cells(VSMCs) induced by serum and growth factor PDGF-BB and the effect of simvastatin on the expression of PTEN,a important regulator of G1/S cell cycle transition. METHODS:The DNA synthesis was determined by [3H]-TdR incorporation, cell cycle was examined with flow cytometry, the protein level of PTEN was measured by Western blot method. RESULTS: (1)Simvastatin inhibited [3H]-TdR incorporation in a dose dependent manner. (2) Flow cytometric DNA analysis revealed that simvastatin induced significantly enhancement of G0/G1 phase and decrease in S phase VSMCs.(3)Simvastatin increased protein level of PTEN and mevalonate, a metabolite of HMG-COA, reversed the effect of simvastatin on PTEN protein expression. CONCLUSION:Simvastatin may inhibit proliferation of VSMCs and retarded cell cycle in G0/G1 phase by increasing PTEN expression through inhibiting synthesis of mevalonate. 相似文献
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The objective of this study was to establish a cryopreservation protocol for hawthorn shoot apices (Crataegus pinnatifida Bge.). Cryopreservation was carried out via encapsulation–dehydration, vitrification, and encapsulation–vitrification on shoot apices excised from in vitro cultures. We began by showing that cold-acclimation enhanced the regrowth of cryopreserved apices from 10.0 to 65.5% in encapsulation–dehydration. We then decided that the encapsulation–dehydration method was an optimal cryopreservation method for hawthorn shoot apices in terms of its high recovery after cryopreservation as well as its ease of use compared with vitrification and encapsulation–vitrification. In encapsulation–dehydration, the protocol leading to optimal regrowth was as follows: after cold-acclimation at 5 °C in the dark for 2 weeks, excised shoot tips were pretreated for 24 h at 25 °C on hormone-free Murashige and Skoog [Murashige, T., Skoog, F., 1962. A revised medium for rapid growth and bioassays with tobacco tissue culture. Physiol. Plant. 15, 473–497] (MS) basal medium with 0.4 mol/L sucrose, then encapsulated and precultured in liquid MS medium with 0.8 mol/L sucrose for 16 h at 25 °C. Precultured beads were dehydrated for 6 h at 25 °C in the dessicator containing 50 g silica gel to a moisture content of 15.3% (fresh-weight basis) before cryostorage for 1 h. In addition, we examined the effect of adding glycerol to both the alginate beads and loading solution to enhance regrowth after cryopreservation in encapsulation–dehydration. In the present study, it was shown that adding 0.5 mol/L glycerol resulted in high regrowth percentages (82.5–90.0%) in four Crataegus species. 相似文献
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A two-year field study investigated the possible effects of grain sorghum (Sorghum bicolor [L.] Moench) and uncultivated areas on the abundance of generalist predators in commercially-managed cotton (Gossypium hirsutum L.) fields in Texas, USA. From 63 to 70 fields were sampled for pests and predators over nine consecutive weeks during early stages of cotton development. Additional data on agronomic practices and landscape composition at three spatial scales were also collected for each field. Stepwise regression analyses were used to determine the relationships of landscape, agronomic and prey variables to the abundance of generalist predators. Because the variables most closely linked to predator levels could vary over time, separate regressions were conducted for three time periods corresponding to stages of grain sorghum growth (half-bloom, hard-dough, maturity) in each year. Significant relationships between predator abundance and agricultural landscape composition appear in both years and in all three time periods, but the specific relationships of landscape variables to cotton predator levels differed between and within years. At maturity in 2001, predator levels rose as the amount of uncultivated land from 1.6 to 3.2 km distant and the perimeter shared with grain sorghum increased. During 2002, the area of grain sorghum (half-bloom) and uncultivated land (hard-dough) within 1.6 km of cotton fields were both positively related to predator numbers. Cotton planting dates and the abundance of cotton fleahoppers (Pseudatomoscelis seriatus [Reuter]) were also strongly linked to predator numbers during both years. Results suggest that the total amount of grain sorghum or uncultivated land in an area is more important than the presence of these habitats adjacent to cotton fields, and that landscape composition may sometimes be the most important factor in determining predator abundance. 相似文献