Singh Archana, Ansari Mohammad Wahid, Singh C P, Shukla Alok, Pant Ramesh Chandra, Bains Gurdeep
a Department of Plant Physiology; College of Basics Sciences & Humanities; G B Pant University of Agriculture & Technology ; Pantnagar , India.
Plant Signal Behav. 2015;10(3):e993264. doi: 10.4161/15592324.2014.993264.
Floral malformation is a main constraint to reduce fruit yield in mango plants. Recently, we report on the role of putrescine in normalizing the functional morphology of mango flower by reducing various adverse effects of ethylene. Here, ethrel, an ethylene releasing compound, was exogenously applied to mango plant cv Amrapali to evaluate the response of flower development under high level of ethylene. Scanning electron microscopy (SEM) study showed that ethrel treated flowers were observed to progressively be deformed and remain unbloom. The flower buds were not distinguishable and flower parts such as petals, sepals, anther and stigma were not properly developed. The stamen showed fused anther lobes and carpel depicted curved style with pointed stigma. The findings of present study suggest the involvement of ethylene to abort the functional morphology of flower and thereby development of malformation.
花畸形是芒果植株果实产量降低的主要限制因素。最近，我们报道了腐胺通过减少乙烯的各种不利影响来使芒果花的功能形态正常化的作用。在此，将乙烯释放化合物乙烯利外源施用于芒果品种阿姆拉普利，以评估在高水平乙烯条件下花发育的响应。扫描电子显微镜（SEM）研究表明，观察到乙烯利处理的花逐渐变形且未开放。花芽无法区分，花瓣、萼片、花药和柱头等花部发育不正常。雄蕊显示花药裂片融合，心皮呈现弯曲的花柱和尖状柱头。本研究结果表明乙烯参与使花的功能形态败育，从而导致畸形发育。
