Effects of Solanum nigrum Rootstock with Different Ploidies Grafting on Selenium Accumulation of Cyphomandra betacea Seedlings

doi:10.11924/j.issn.1000-6850.casb2020-0285

Abstract

Abstract:

The paper aims to study the effects of grafting on the selenium accumulation of fruit tree. The pot experiment was used to study the effects of Solanum nigrum rootstock with different ploidies grafting on the growth and selenium accumulation of Cyphomandra betacea seedlings, the S. photeinocarpum (diploid), colchicine-induced tetraploid S. photeinocarpum post generation and S. nigrum (hexaploid) were used as rootstocks, and C. betacea was used as scion for grafting. The results showed that the different ploidies of S. nigrum rootstocks increased the total chlorophyll, carotenoid and selenium content of C. betacea seedlings compared with the ungrafted, and the order was: hexaploid rootstock> tetraploid rootstock> diploid rootstock> the ungrafted. The different ploidies of S. nigrum rootstocks also increased the dry weight and selenium accumulation amounts of rootstock stem, scion stem, scion leaf and whole scion of C. betacea seedlings, and the best increasing effect was hexaploid rootstock. Compared with the ungrafted, hexaploid rootstock increased the dry weight, selenium content and selenium accumulation amount of whole scion of C. betacea seedlings by 69.54%, 56.43% and 165.17%, respectively. Therefore, hexaploid as rootstock could be used to promote the growth of C. betacea and increase the selenium accumulation ability of C. betacea.

Key words: different ploidies of Solanum nigrum, Cyphomandra betacea, grafting, selenium, photosynthetic physiology, accumulation

CLC Number:

S663.9
S616

Hu Rongping, Fan Zhonghan, Chen Qinghua, Liao Huiping, Li Honghao, Chen Song, Lin Lijin. Effects of Solanum nigrum Rootstock with Different Ploidies Grafting on Selenium Accumulation of Cyphomandra betacea Seedlings[J]. Chinese Agricultural Science Bulletin, 2021, 37(2): 43-47.

Figures/Tables 4

References 33

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处理	根系	砧木茎秆	接穗茎秆	接穗叶片	整个接穗
未嫁接	0.200±0.005a	0.102±0.003d	0.115±0.006c	0.536±0.014c	0.650±0.020c
二倍体砧木	0.134±0.006b	0.118±0.002c	0.119±0.002bc	0.540±0.010c	0.659±0.011c
四倍体砧木	0.193±0.008a	0.137±0.005b	0.128±0.004b	0.672±0.011b	0.801±0.015b
六倍体砧木	0.204±0.009a	0.190±0.006a	0.181±0.003a	0.921±0.016a	1.102±0.018a

处理	根系	砧木茎秆	接穗茎秆	接穗叶片	整个接穗
未嫁接	0.200±0.005a	0.102±0.003d	0.115±0.006c	0.536±0.014c	0.650±0.020c
二倍体砧木	0.134±0.006b	0.118±0.002c	0.119±0.002bc	0.540±0.010c	0.659±0.011c
四倍体砧木	0.193±0.008a	0.137±0.005b	0.128±0.004b	0.672±0.011b	0.801±0.015b
六倍体砧木	0.204±0.009a	0.190±0.006a	0.181±0.003a	0.921±0.016a	1.102±0.018a

处理	叶绿素a/(mg/g)	叶绿素b/(mg/g)	叶绿素总量/(mg/g)	叶绿素a/b	类胡萝卜素/(mg/g)
未嫁接	1.035±0.030c	0.332±0.017c	1.367±0.046c	3.119±0.066a	0.221±0.003c
二倍体砧木	1.350±0.037b	0.414±0.013b	1.764±0.050b	3.261±0.011a	0.232±0.006c
四倍体砧木	1.492±0.013a	0.467±0.015a	1.960±0.029a	3.195±0.077a	0.293±0.005b
六倍体砧木	1.550±0.023a	0.502±0.020a	2.052±0.044a	3.092±0.078a	0.328±0.002a

处理	叶绿素a/(mg/g)	叶绿素b/(mg/g)	叶绿素总量/(mg/g)	叶绿素a/b	类胡萝卜素/(mg/g)
未嫁接	1.035±0.030c	0.332±0.017c	1.367±0.046c	3.119±0.066a	0.221±0.003c
二倍体砧木	1.350±0.037b	0.414±0.013b	1.764±0.050b	3.261±0.011a	0.232±0.006c
四倍体砧木	1.492±0.013a	0.467±0.015a	1.960±0.029a	3.195±0.077a	0.293±0.005b
六倍体砧木	1.550±0.023a	0.502±0.020a	2.052±0.044a	3.092±0.078a	0.328±0.002a

处理	根系	砧木茎秆	接穗茎秆	接穗叶片	整个接穗
未嫁接	11.22±0.08d	2.625±0.116c	2.197±0.087d	2.483±0.020d	2.433±0.031d
二倍体砧木	12.32±0.40c	2.717±0.073c	2.722±0.091c	2.874±0.050c	2.847±0.024c
四倍体砧木	13.99±0.22b	4.451±0.128b	3.668±0.085b	3.159±0.054b	3.241±0.031b
六倍体砧木	18.15±0.43a	5.790±0.162a	4.251±0.077a	3.719±0.092a	3.806±0.090a