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De novo adventitious root formations in mini-cuttings of Azadirachta indica in response to different rooting media and auxin treatments

机译:在Azadirachta indica的迷你切割中的De Novo不定根根,响应不同生根培养基和养羊酸治疗

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摘要

Neem (Azadirachta indica A. Juss) is a multipurpose Indian tree important to local economy. Conservation of the genetic resources of neem is essential for the adaptability of this tree species to projected climate change impacts. Here, the effect of type and concentration of auxins in different rooting media on adventitious root formation (ARF) in mini-cuttings of Azadirachta indica is depicted. Three different rooting media (i.e., sand, vermiculite and soil) were used, and the experiment was established using three types of auxin (IBA, IAA and NAA) and 6 concentration treatment combinations (100, 250, 500, 750, 1000 and 1500 mg l-1), in a complete randomized block design (CRBD). Significant effects of different auxin types, concentration treatments and rooting media on adventitious root formation of neem mini-cuttings were observed. Mini-cuttings were assessed for rooting percentage, number of roots, root length and number of leaves. IBA resulted in higher rooting percentage (90%), number of roots (149.56), root length (14.83 cm) and number of leaves per rooted mini-cuttings (12.78), when growing in sand. The determination of proper rooting protocols and the use of mini-cuttings were proved important for improving mass propagation of A. indica.
机译:Neem(Azadirachta indica A. Juss)是一种对地方经济重要的多用途印度树。保护Neem的遗传资源对这种树种对预测气候变化的适应性至关重要。这里,描绘了在Azadirachta indica的迷你切屑中不同生根介质中毒素类型和浓度的效果。使用三种不同生根培养基(即,砂,蛭石和土壤),使用三种养蛋白(IBA,IAA和NAA)和6种浓度处理组合(100,250,500,750,1500和1500建立实验MG L-1),在完整的随机块设计(CRBD)中。观察到不同养素素类型,浓度处理和生根介质对Neem Mini-Cuttings的不定根形成的显着影响。用于生根百分比,根部数量,根部长度和叶子数的迷你切割。 IBA导致生根百分比(90%),根数(149.56),根长(14.83cm)和砂中生长时的叶片数(12.78)。确定了正确的生根方案和使用迷你切屑的使用,以改善A.籼稻的大规模繁殖。

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