Received: 14-02-2021 / Accepted: 29-10-2021
This study described the plant morphology of seedless orange, Citrus sinensis(L.) cv. Soan discovered in Hau Giang provinceThe description of plant morphology was based on IPGRI (1999) descriptors for Citrus spp. by collecting 30 samples of leaves, flowers and fruits per tree of seedless and seedy trees.The results showed that, seedless Soan orange tree had some plant morphological characteristics that were different from those of the seedy tree such as the ratio of leaf length/leaf width (1.55 > 1.42), the ratio of petal length/petal width (2.49 > 2.21); the ratio of ovary height/ovary diameter (0.91 > 0.82), the ratio of fruit height/fruit diameter (0.93 > 0.90). This can be used to identify the seedless Soan orange tree. Fruits of seedless Soan orange collected in March and in September 2016) possessed a total of 2.25 seeds/fruit, 93.3% of fruits had total number of seeds less than 5 and 100% of fruits had the number of plump seeds less than 5. In addition, most of the plant morphological characteristics s of seedless Soan orange were not different from those of seedy Soan orange.