Knowledge of agro-morphological genetic variation and cropping conditions on vegetative and yield-related traits plays a significant role in varietal improvement and production of eggplant (Solanum melongena L.). Following this premise, the current study was conducted to critically asses the genetic variation of 29 eggplant accessions by using agro-morphological characterization evaluated under two cropping conditions, namely, glasshouse and open field. The experiments were laid out in randomized complete block design (RCBD) with three replications. Data on vegetative and yield characteristics were collected and subjected to analysis of variance (ANOVA) using SAS 9.4, while variance components were estimated manually. The results obtained from the analysis of variance indicated a highly significant difference (p ≤ 0.01) for all characteristics studied in both cropping conditions. The evaluated accessions were grouped into six major clusters based on agro-morphological traits using Unweighted Pair Group Method with Arithmetic mean (UPGMA) dendrogram. Hence, crosses between group I with VI or V could be used to attain higher heterosis and vigor among the accessions. Also, this evaluation could be used as a selection criterion for important yield agronomic traits in eggplant. The methodology and the approaches used may provide a model for the enhancement of other vegetable crop diversity towards adaptability to the cropping condition decision. This result displayed importance for preserving eggplant germplasm for future varietal development and revealed that open field cropping condition is more suitable under Malaysia’s agroecology.

中文翻译：

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在露天和温室种植条件下评估茄子种质的遗传变异

关于营养和产量相关性状的农业形态遗传变异和种植条件的知识在茄子的品种改良和生产中起着重要作用（茄子（Solanum melongena）L.）。在此前提下，目前的研究是通过利用温室和露天两种种植条件下评价的农业形态特征，对29种茄子的遗传变异进行严格评估。实验以三个重复进行的随机完整块设计（RCBD）进行。收集有关营养和产量特征的数据，并使用SAS 9.4进行方差分析（ANOVA），同时手动估算方差成分。从方差分析获得的结果表明存在高度显着差异（p≤0.01）的两个种植条件下的所有特性。使用不加权对分组法和算术平均值（UPGMA）树状图，根据农业形态性状将评估的种质分为六个主要类群。因此，I组与VI或V之间的杂交可用于获得更高的杂种优势和种质间的活力。而且，该评价可以用作茄子重要产量农艺性状的选择标准。所使用的方法和方法可以提供一个模型，用于增强其他蔬菜作物的多样性，以适应作物条件的决定。该结果显示了保存茄子种质以备将来品种发展的重要性，并表明在马来西亚的农业生态学下，开放田间种植条件更为合适。