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991.
采前施用钾肥对菠萝果实贮藏特性的影响 总被引:2,自引:0,他引:2
为提高果实的贮藏品质,以菠萝品种巴厘(Ananas comosus cv.Comtede Paris)为试材,采用滴灌形式,研究施钾(硫酸钾和氯化钾)对果实贮藏期间可溶性固形物、可溶性蛋白、维生素C、可滴定酸和可溶性糖的影响.结果表明:适量增施硫酸钾能提高果实采收时可溶性糖、可溶性蛋白、可滴定酸、维生素C的含量;延缓果实贮藏中后期可溶性固形物、维生素C和可滴定酸含量的下降,提高可溶性蛋白含量.而增施氯化钾则显著减少了采收时果实可溶性固形物含量,并且不影响贮藏期间果实维生素C含量.因此,施900 kg/hm2硫酸钾处理果实贮藏品质更好. 相似文献
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《Southern Forests》2013,75(4):317-327
Regression analyses identified ‘Growth Days’ (an index expressing site moisture availability) as the only site variable contributing significantly to the prediction to wood density (R2 = 0.57), whereas the model predicting grain angle included only ‘Altitude’ (R2 = 0.60). These results surfaced during an investigative study to quantify various sources of variation in wood properties and to quantify the effect of a number of site factors on wood properties of Pinus patula grown in the Mpumalanga escarpment area of South Africa. For this purpose, 10 trees were sampled from each of 17 diverse sites for wood property analyses. The effects of site, distance from the pith and differences between trees within site on wood density, transverse shrinkage, grain angle and dynamic modulus of elasticity were investigated. The site factors considered included a wide variety of soil and climatic factors. The effect of radial distance from the pith and differences between individual trees within sites were highly significant, accounting for most of the variation in wood properties. Although the effects of a number of site factors were statistically significant, they generally explained relatively small but important variation in wood properties among sites. The study not only quantified the effects of important sources of variation on a few key wood properties, but it also revealed that the extent of differences between sites can be explained in terms of some specific site factors. It is envisaged that the results will contribute significantly towards the refinement of current forest site classification systems for improved decision-making with respect to wood quality in intensively managed plantation systems. 相似文献
996.
Itaru Yamaguchi Kensuke Myojo Hiroko Sanada Eri Sudo Sayaka Ootsuka Hiroshi Okumura Atsuko Takami Tomomi Yoneshige Yui Suzuki Minami Imaizumi Chie Takada Naoya Kimoto Koji Saeki Katsumi Takaba 《Journal of toxicologic pathology》2013,26(3):301-307
We histopathologically and immunohistochemically investigated a case of malignant
lymphoma that spontaneously developed in a male common marmoset at two years of age.
Beginning at two years four months of age, the animal had an enlargement of the
submandibular and inguinal lymph nodes, small subcutaneous nodules near the right breast
and an approximately fivefold increase in peripheral lymphocyte count compared with the
previous examination value. The postmortem findings at two years eight months of age
showed lymphadenopathy with enlargement of the thymus and spleen. Small- to
intermediate-sized neoplastic lymphocytes had diffusely proliferated in the enlarged
nodes. The neoplastic cells were pleomorphic and had irregularly shaped nuclei. The
nuclear chromatin staining revealed hyperchromatism in the small-sized cells, and the
intermediate-sized cells exhibited vesicular staining. An immunohistochemical examination
indicated that the neoplastic lymphocytes were positive for CD3 and negative for CD20,
thus suggesting that they had originated from T cells. In addition, the proliferation of
high endothelial venules and reactive epithelioid histiocytes was observed. Scattered
tingible body-laden macrophages were infrequently detected. Neoplastic lymphocytes were
also observed in the thymus, spleen, heart, lungs, liver, kidneys, adrenal glands and
femoral and sternal bone marrow. This malignant lymphoma in a young male common marmoset
was considered to fit the category of “peripheral T-cell lymphoma, not otherwise specified
(PTCL-NOS)” according to the new WHO system of classification. 相似文献
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[目的]分析常见葫芦科作物砧木嫁接甜瓜(Cucumis melo L.)后甜瓜的生长发育及果实品质。[方法]以东甜02自根苗作为对照,进行以南瓜(Cucurbita moschata)、大葫芦[Lagenaria siceraria(Molina)Standl.var.gourda Ser.]、瓠子[Lagenaria siceraria(Molina)Standl.var.clavata Ser.]、丝瓜(Luffa cylindrica)、节瓜[Benincasa hispida(Thunb.)Cogn.var.chieh-qua How]为砧木、东甜02为接穗的嫁接栽培比较试验,研究不同砧穗组合的嫁接成活率、植株生长速率和果实性状。[结果]以节瓜、丝瓜为砧木,不利于东甜02果实优良性状的表现,而以瓠子、南瓜为砧木,对东甜02有积极的影响,而以大葫芦为砧木,则利弊参半。[结论]该研究可为甜瓜嫁接栽培的发展提供理论依据。 相似文献
999.
[目的]研究4种常用有机肥在相同氮素条件下对有机稻米品质的影响,为有机稻生产用肥提供理论依据.[方法]有机稻栽培模式下,设置不同有机肥种类的处理,通过对稻米的加工、食味、蒸煮、营养以及安全品质的测定分析,探讨不同的施肥种类对有机稻米品质的影响.[结果]稻米的加工、食味、蒸煮品质主要取决于稻米种植品种,单一农家肥料能改善稻米的食味、蒸煮特性和营养水平,但存在安全风险,商品有机肥具备单一农家肥的优点,且能有效控制安全品质.[结论]商品有机肥适用于有机稻的生产;单一农家肥应控制重金属的含量,选择符合有机生产要求的原料. 相似文献
1000.