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首页> 外文期刊>Pakistan journal of botany >DEGRADATION OF PHENOLICS IN DIGERA MURICATA: PHYTOTOXIC EFFECTS OF ROOT AND SHOOT LEACHATE PLUS N FERTILIZATION ON THE GROWTH OF MILLET
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DEGRADATION OF PHENOLICS IN DIGERA MURICATA: PHYTOTOXIC EFFECTS OF ROOT AND SHOOT LEACHATE PLUS N FERTILIZATION ON THE GROWTH OF MILLET

机译：Digera Muricata中酚类的降解：根茎浸润的植物毒性作用加N施肥对小米生长

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摘要

Digera muricata was found to be highly allelopathic in nature. Phenolic compounds (quercetin, sinapic and ferluicacid), alkaloids (cystine and berbine) and a terpenoid (limonene) was detected from root and shoots of D. muricata.Decaying plant material of D. muricata inhibit not only the germination and growth of neighbouring species but it is alsoself inhibitory. When plant matures and dies down, the leachates having greater concentrations of phenols enter the soil. Atthis time the leachate is highly concentrated but with the passage of time it undergoes degradation and level of phenolicdeclines. Thus allowing the germination of other plants. Therefore, the present study was designed to reveal the degradationprocess of phenolic compounds in the soil Moreover, adverse effects of phenolic compounds on the growth of bullrishmillet, the most susceptible crop plant.was also studied. For this purpose different levels of nitrogen fertilization (0 mM, 1mM and 5 mM) were added to the soils having different dilutions of decaying root and shoot leachate of D. muricata (fullstrength,1/2 strengthand 1/4 strength). Addition of nitrogen to the soil showed significant decline of phenolic compoundswith time, because nitrogen might increase the microbial activites in the soil, which lowered the phenolic levels, thusameliorating growth rates. Concentration of phenolic compounds were greater in the soil having full-strength root/shootleachate with 5 mM N fertilization, followed by by 1 and 0 mM N fertilization. Growth of millet was significantly higher inthe controls having no plant leachate followed by 1/4 and 1/2 strength root/shoot leachate. Dry weights were considerablylower in full-strength plant leachate. Whereas, 5 mM N fertilization showed maximum growth followed by 1 and 0 mM Nfertilization. Relatively root leachate was found to be more toxic than shoot leachate.
机译：Digera Muricata在自然界中具有高度发育感。从D. Muricata的根和芽中检测到酚醛化合物（槲皮素，SINAPIC和FERLUICACID），生物碱（胱氨酸和BERLUICACID）和萜类化合物（LIMONENE）.D.Mricata的植物材料不仅抑制了邻近物种的萌发和生长但它是Alsoself抑制性的。当植物成熟和死亡时，具有更大浓度酚的渗滤液进入土壤。渗滤液是高度浓缩的，但随着时间的推移，它经历了苯酚的降解和水平。因此，允许其他植物的萌发。因此，本研究旨在揭示土壤中酚类化合物的降解过程，此外，酚类化合物对牛奶群生长的不利影响，最易受影响的作物植物。也研究了。为此目的，将不同水平的氮肥（0mm，1mm和5mm）加入到具有不同稀释根和D.Muricata（全高长，1/2强度和1/4强度）的衰减根和芽液的土壤中的土壤中。向土壤中添加氮迹显示出酚醛化合物的含量显着下降，因为氮气可能会增加土壤中的微生物活性，从而降低酚类水平，从而提高生长速率。酚醛化合物的浓度在具有5mm N施肥的全强根/脱烯醇酯的土壤中更大，然后达到1和0mM施肥。小米的生长明显高，无需植物渗滤液，其次是1/4和1/2强度根/芽液。干重在全强化植物渗滤液中考虑亚展。虽然，5毫米施肥显示最大的生长，然后是1和0毫米。发现相对根的渗滤液比芽液更具毒性。

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