Characteristics of fruits and seeds of cereus plants (cactaceae) grown in South and Northeastern Brazil

Gilberto Codignole Luz, H. Z. Neto, C. A. Mangolin, M. F. Machado
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引用次数: 1

Abstract

The physical and physiological characteristics of fruits and seeds were analyzed so that parameters may be determined to differentiate cactus plants of the Cereus genus from south and northeastern Brazil. Length, width, bark thickness, pulp diameter, weight of fruits, and sugar content (°Brix) of the fruit pulp, number of seeds (NS), weight of 100 seeds (P 100 ) and germination taxa (%G) of the seeds from plants of the two regions were evaluated. Fruit length, bark thickness and Brix degree were higher in Cereus plants from Maringá (south) than in plants from Picos (northeast), whilst the P 100 of plants cultivated in Picos was higher than the P 100 of plants grown in Maringá. NS and %G, at 30°C, were not significantly different in the seeds of the plants cultivated in Maringá and Picos. Positive Pearson correlation was reported between NS and the fruits´ weight, length, width, and diameter. Fruit width had a positive correlation with the weight, length, diameter, bark thickness and sugar content. The length, diameter and thickness of the bark were also positively correlated with the fruits´ sugar content. Above evidences suggest that larger fruits present higher Brix degree. The present study was important to shown that the Cereus plants from Maringá may be a source of bigger and sweeter fruits, essential characteristics for breeding programs..
生长在巴西南部和东北部的蜡属植物(仙人掌科)的果实和种子特征
对果实和种子的生理特征进行了分析,以确定仙人掌属植物与巴西南部和东北部仙人掌的区分参数。对两个地区植物的长度、宽度、树皮厚度、果肉直径、果实重量、果肉含糖量(°Brix)、种子数(NS)、百粒重(p100)和种子萌发分类群(%G)进行了评价。南部马林果属植物的果实长度、树皮厚度和白度均高于东北部皮科斯,皮科斯栽培植物的p100高于东北部马林果属植物的p100。在30°C条件下,NS和%G在maring和Picos种植的植物种子中没有显著差异。果实的质量、长度、宽度和直径与氮含量呈正相关。果宽与果重、果长、果径、果皮厚度、含糖量呈正相关。树皮的长度、直径和厚度也与果实含糖量呈正相关。以上证据表明,果实越大,糖度越高。目前的研究表明,来自maringing的蜡属植物可能是更大、更甜的果实的来源,这是育种计划的基本特征。
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