Comprehensive evaluation of watermelon variety Jingjia 301

doi:10.16178/j.issn.0528-9017.20260052

Abstract

Abstract:

This study primarily focused on the watermelon variety Jingjia 301，and conducted regional trials in steel-framed plastic greenhouses in Yuhang District，Hangzhou City， Zhejiang Province. A systematic comparison was made between Jingjia 301 and mainstream varieties Meidu and Zaojia 8424 in terms of plant growth，fruit development period，fruit setting rate，stress resistance，yield composition，and fruit quality. The trial adopted a randomized block design and was conducted from February to June 2025，with unified water and fertilizer management and double-cord pruning. The results demonstrated that Jingjia 301 achieved significantly （p<0.05） higher yields than the control varieties，reaching 5 433.3 kg per 667 m2 with a single fruit weight of 6.78 kg. In terms of fruit quality，Jingjia 301 exhibited higher central sugar content（12.93%）and edge sugar content（9.57%），with uniform sugar distribution and balanced flavor. The peel thickness of Jingjia 301 was 1.17 cm，intermediate between the two control varieties，balancing storage and transportability with edibility. Additionally，Jingjia 301 demonstrated suitable maturity period，high fruit setting rate，and strong stress resistance. In summary，Jingjia 301 achieved a synergistic effect of high yield，superior quality，and strong stress resistance，making it suitable for promotion in similar ecological regions. This study employed a multi-index system evaluation to validate the application potential of Jingjia 301 in modern watermelon production，providing theoretical support for variety selection and cultivation optimization.

Key words: watermelon, Jingjia 301, yield, stress resistance, fruit quality

CLC Number:

S651

GONG Yao, ZHAO Yucheng, JIANG Yuliang, YUAN Baiyu, ZHONG Min, ZHAN Lu, WANG Cheng, MIAO Yunchun. Comprehensive evaluation of watermelon variety Jingjia 301[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(5): 1123-1128.

Figures/Tables 8

Fig.1 Stem diameter and stem length of different watermelon varieties

Fig.2 Flowering and fruiting nodes of different watermelon varieties

Fig.3 Fruit development period of different watermelon varieties

Fig.4 Fruit setting rate of different watermelon varieties

Table 1 The incidence rate of frozen injury，high temperature disorders and premature aging in different watermelon varieties

品种	冻伤发生率	高温障碍发生率	早衰发生率
京嘉301	2.33	6.33	3.33
美都	9.67	4.33	4.33
早佳8424	4.67	12.67	6.00

Fig.5 Single fruit weight and yield of different watermelon varieties

Fig.6 Central and edge sugar contents of different watermelon varieties

Fig.7 Peel thickness of different watermelon varieties

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