不同形状和大小种子玉米植株的初始生长和叶绿素指数

Lucian Alex Santos, Benhur Schwartz Barbosa, Carolina Cipriano Pinto, Vinícius Jardel Szareski, Ivan Ricardo Carvalho, João Roberto Pimentel, Cristian Troyjack, Tiago Corazza Rosa, Felipe Koch, Ítala Thaísa Padilha Dubal, Ana Karina Carmo Ferreira Santos, Luis Osmar Braga Schuch, Emanuela Garbin Martinazzo, Tiago Pedó, Tiago Zanatta Aumonde
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引用次数: 1

摘要

本研究旨在评价不同大小和形状种子对玉米植株初始生长和叶绿素含量的影响,并建立生长性状、叶绿素指数与种子形态之间的关系。试验设计为随机完整区组,两种基因型分别采用4种大小和形状的种子,4个采集周期(21、24、27和30 DAE)和4个重复。测定根冠长、茎粗、叶面积、叶干质量、茎、根、总、叶质量比、叶面积比、比叶面积、叶绿素a、b和总叶绿素。结果表明,基因型“A”的幼苗起源于大而圆的种子,其茎粗、叶干质量、茎干质量、根干质量和总干质量最高。作为基因型的一个功能,玉米植株的生长有一个明显的反应。无论基因型如何,种子的大小和形状对叶绿素a、b和total的指标没有影响。不同大小和形状的种子与叶面积、叶干质量和比叶面积均有较强的正相关。
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Initial growth and chlorophyll indices of maize plants originating from seeds of different shapes and sizes
The objective of this work was to evaluate the initial growth and chlorophyll content of maize plants originated from seeds with different sizes and shapes, as well as to establish the relationship between growth traits, chlorophyll index and seed formats. The experimental design was a randomized complete blocks, and the treatments were composed by seeds of four sizes and shapes for each of the two genotype used, and four collection periods (21, 24, 27 and 30 DAE) and four replications. The root and shoot length, stem diameter, leaf area, dry mass of leaf, stem, roots and total, leaf mass ratio, leaf area ratio, specific leaf area and chlorophyll a, b and total chlorophyll were determined. It was verified that seedlings of genotype "A" originated from large round seeds, presented the highest stem diameter, leaf dry mass, stem dry mass, root dry mass and total dry mass. There is a distinct response in the growth of maize plants as a function of the genotype. Regardless of the genotype, the size and shape of seeds do not influence the indexes of chlorophyll a, b and total. There is a positive and strong correlation between seeds of different sizes and shapes with leaf area, leaf dry mass and specific leaf area.
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