沙芥属植物花粉和果实形态特征研究

doi:10.12190/j.issn.2096-1197.2022.04.15

Abstract

Abstract:

【Objective】Understanding the pollen,fruit,and seed surfaces morphological traits of Pugionium Gaertn. and provide basis for the evolutionary history and the classification of species within the Pugionium Gaertn. genus.【Methods】The morphological features of Pugionium Gaertn. pollen,fruit,and seeds were observed using a Hitachi S-530 scanning electron microscope,and the observation results were analyzed.【Results】The pollen of Pugionium Gaertn. was small to medium-sized,long spherical,with three germinating grooves(P/E 1.23-1.43),reticular carving,deep and large mesh,and numerous rectangular holes on the ridge. The germination groove of P. dolabratum var. platypterum H. L. Yang was shorter and shallower than those of P. cornutum(L.)Gaertn.,P. calcaratum Kom.,and P. dolabratum Maxim.,and the groove film was not apparent. The fruit of Pugionium Gaertn. were samara with nearly equal wings on either side. Among them,P. dolabratum Maxim.,P. dolabratum var. platypterum H. L. Yang and P. calcaratum Kom. had flat angles between the wings while P. cornutum(L.)Gaertn. had an obtuse angle between the wings. P. dolabratum var. platypterum H. L. Yang had the widest wing,and P. dolabratum Maxim. had the longest wing. The seed coat of Pugionium Gaertn. was glossy yellowish brown with barely perceptible seed pores. The hilum was located at the base of the ventral surface. The seed of P. calcaratumKom. was biconvex shape with no dip at the raphe,which was different from the kidney shape of other species,with obvious depression on both sides of the raphe P. dolabratum var. platypterum H. L. Yang seeds had reticulated shallow dish-shaped surface with hairs on the murus,in contrast to other species′irregular mesh.【Conclusion】The pollen and seed coat micromorphology revealed that within the genus there were intraspecific similarities as well as interspecific distinctiveness,supporting the idea that P. dolabratum var. platypterum H. L. Yang was a distinct species.

Key words: Pugionium Gaertn., Pollen, Fruit, Seed, Morphology

CLC Number:

S647

QIN Xinyuan, CHANG Zhonglin, HUANG Xiumei, HAO Lizhen, FU Nana, ZHANG Fenglan. Study on the pollen and fruit morphology of Pugionium Gaertn.[J].Journal of Northern Agriculture, 2022, 50(4): 109-115.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2022.04.15

https://journal30.magtechjournal.com/bfnyxb/EN/Y2022/V50/I4/109

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References 37

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Study on the pollen and fruit morphology of Pugionium Gaertn.

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