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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (11): 61-64.doi: 10.11924/j.issn.1000-6850.casb18010136

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Morphological and Germination Characteristics of Parakmeria lotungensis Seeds from Different Provenances

  

  • Received:2018-01-24 Revised:2018-03-18 Accepted:2018-04-04 Online:2019-04-15 Published:2019-04-15

Abstract: Using seeds of Parakmeria lotungensis from Xinning Hunan and Wuyishan Fujian as research materials, we measured the longitudinal and transverse diameter, thousand seed weight, water content of seeds, and the seed percentage of fruits. Through seed germination experiments, we analyzed the germination rate and seedling growth, and clarified the difference of morphological characteristics and germination rate between seeds from different provenances. Results showed that: the seed percentage was 19.8% of Xinning fruits, and was 12% of Wuyishan fruits. The longitudinal diameter of Xinning seeds was 9.81 mm, the transverse diameter was 7.57 mm, the thousand- kernel- weight (TKW) was 156.28 g, and the water content was 11.1% . The longitudinal diameter of Wuyishan seeds was 7.04 mm, the transverse diameter was 6.61 mm, the thousandkernel- weight (TKW) was 111.38 g, and the water content was 8.46%. The germination rate of Xining seeds and Wuyishan seeds was 87%, and 82%, respectively. The seedling height of Xining was 9.17 cm, and the ground diameters was 2.31 mm. The seedling height of Wuyishan was 6.23 cm, and the ground diameter was 2.0 mm. Variance analysis showed that: there were significant differences of the longitudinal diameter, transverse diameter, seed percentage, thousand- kernel- weight (TKW) and water content of seeds from different provenances. There were significant differences of the germination rate of seeds, height and ground diameter of seedling between seeds from different provenances. The germination rate and morphological characteristics were positively correlated, indicating that the morphological characteristics affect the germination characteristics of the seeds, the lager the seed, the higher the seed percentage and the germination rate, and the greater the seedling growth.