Study on Variety Differences in Cd and Hg Uptake of Pakchoi Under Natural Co-contamination Conditions

doi:10.11924/j.issn.1000-6850.casb2023-0588

Abstract

Abstract:

To study the effects of natural mild combined pollution of cadmium (Cd) and mercury (Hg) on the growth and heavy metal absorption of different cultivars of pakchoi, pot and field experiments were conducted to determine the biomass, vitamin C concentration, soluble protein concentration, Cd and Hg concentration of the edible part. It was found that all the measured indicators of 21 cultivars were significantly different. The Cd concentration was 0.185-1.25 mg/(kg·DW), and the Hg concentration was 8.56-238 μg/(kg·DW). And under both pot and field conditions, two of the varieties had a Cd bioaccumulation factor (BCF) <1, while all varieties had a Hg BCF<1. Correlation analysis showed that there was no significant co-relationship among edible biomass, soluble protein concentration, Cd concentration, and Hg concentration. The results indicated that there was no healthy risk for planting the 21 tested cultivars in the lightly polluted farmland, and ‘Naiyouxiaobaicai’ is the most safety variety.

Key words: farmland, heavy metals, vegetable, low accumulation varieties, safe utilization

YU Chao, WANG Yun, MA Luyao, ZHU Yaojia, ZHAN Lichuan, SHEN Hong, HU Shuaidong, HU Zhipeng, WU Yingjie, FENG Ying. Study on Variety Differences in Cd and Hg Uptake of Pakchoi Under Natural Co-contamination Conditions[J]. Chinese Agricultural Science Bulletin, 2024, 40(16): 124-130.

Figures/Tables 9

References 25

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编号	品种	编号	品种	编号	品种
1	青帮小白菜	8	绿强小白菜	15	奶油小白菜
2	北京特快小白菜	9	四季小白菜	16	黄金快菜
3	88小白菜	10	紫贵妃	17	黑叶五月慢
4	五月慢	11	早熟五号	18	北京小白菜
5	嘉兴矮脚青	12	新选上海青	19	四季小白菜
6	迅捷精品快菜	13	精品四月慢	20	杂交黑叶小白菜
7	早熟奶油小白菜	14	奶白菜	21	苏州青

编号	品种	编号	品种	编号	品种
1	青帮小白菜	8	绿强小白菜	15	奶油小白菜
2	北京特快小白菜	9	四季小白菜	16	黄金快菜
3	88小白菜	10	紫贵妃	17	黑叶五月慢
4	五月慢	11	早熟五号	18	北京小白菜
5	嘉兴矮脚青	12	新选上海青	19	四季小白菜
6	迅捷精品快菜	13	精品四月慢	20	杂交黑叶小白菜
7	早熟奶油小白菜	14	奶白菜	21	苏州青

品种编号	鲜重		干重
品种编号	盆栽试验	田间试验	盆栽试验	田间试验
1	10.77±1bcd	12.88±0.24de	0.51±0.06fgh	0.60±0.01fg
2	11.15±1.32bc	13.74±0.38cd	0.66±0.08cde	0.81±0.02cd
3	10.16±0.29cdef	12.16±0.26ef	0.51±0.01fg	0.65±0.01f
4	8.28±1.44gh	9.65±0.12i	0.36±0.05ij	0.44±0.01h
5	6.3±1.05i	7.05±0.36jk	0.28±0.04jkl	0.34±0.02ij
6	14.03±1.36a	16.43±0.98a	0.65±0.02de	0.76±0.05de
7	13.7±0.71a	14.85±0.98a	0.66±0.04cde	0.72±0.02e
8	6.7±0.53hi	7.47±0.30j	0.42±0.02hi	0.46±0.02h
9	9.44±1.84defg	11.21±0.33fg	0.46±0.11gh	0.55±0.02g
10	4.12±1.44j	5.36±0.53l	0.2±0.03l	0.27±0.03k
11	13.3±1.1a	15.87±0.51ab	0.75±0.15bc	0.90±0.03b
12	5.49±0.33ij	6.15±0.24kl	0.27±0.05kl	0.30±0.01jk
13	11.54±0.73bc	14.13±0.55c	0.62±0.01de	0.76±0.03de
14	8.64±1.04fg	9.92±0.44hi	0.35±0.08ijk	0.40±0.02hi
15	12.33±0.9ab	14.11±0.20c	1.02±0.04a	1.17±0.02a
16	8.66±0.73fg	10.95±0.55gh	0.58±0.01ef	0.73±0.04e
17	6.22±0.78i	7.56±0.83j	0.35±0.02ijk	0.43±0.05h
18	8.55±1.33fg	9.97±0.29hi	0.66±0.01cde	0.77±0.02cde
19	8.2±0.74gh	9.89±0.91hi	0.49±0.02fgh	0.59±0.05fg
20	9.02±0.47efg	10.86±1ghi	0.7±0.04cd	0.84±0.08bc
21	10.64±0.79bcde	12.18±0.56ef	0.8±0.03b	0.91±0.04b

品种编号	鲜重		干重
品种编号	盆栽试验	田间试验	盆栽试验	田间试验
1	10.77±1bcd	12.88±0.24de	0.51±0.06fgh	0.60±0.01fg
2	11.15±1.32bc	13.74±0.38cd	0.66±0.08cde	0.81±0.02cd
3	10.16±0.29cdef	12.16±0.26ef	0.51±0.01fg	0.65±0.01f
4	8.28±1.44gh	9.65±0.12i	0.36±0.05ij	0.44±0.01h
5	6.3±1.05i	7.05±0.36jk	0.28±0.04jkl	0.34±0.02ij
6	14.03±1.36a	16.43±0.98a	0.65±0.02de	0.76±0.05de
7	13.7±0.71a	14.85±0.98a	0.66±0.04cde	0.72±0.02e
8	6.7±0.53hi	7.47±0.30j	0.42±0.02hi	0.46±0.02h
9	9.44±1.84defg	11.21±0.33fg	0.46±0.11gh	0.55±0.02g
10	4.12±1.44j	5.36±0.53l	0.2±0.03l	0.27±0.03k
11	13.3±1.1a	15.87±0.51ab	0.75±0.15bc	0.90±0.03b
12	5.49±0.33ij	6.15±0.24kl	0.27±0.05kl	0.30±0.01jk
13	11.54±0.73bc	14.13±0.55c	0.62±0.01de	0.76±0.03de
14	8.64±1.04fg	9.92±0.44hi	0.35±0.08ijk	0.40±0.02hi
15	12.33±0.9ab	14.11±0.20c	1.02±0.04a	1.17±0.02a
16	8.66±0.73fg	10.95±0.55gh	0.58±0.01ef	0.73±0.04e
17	6.22±0.78i	7.56±0.83j	0.35±0.02ijk	0.43±0.05h
18	8.55±1.33fg	9.97±0.29hi	0.66±0.01cde	0.77±0.02cde
19	8.2±0.74gh	9.89±0.91hi	0.49±0.02fgh	0.59±0.05fg
20	9.02±0.47efg	10.86±1ghi	0.7±0.04cd	0.84±0.08bc
21	10.64±0.79bcde	12.18±0.56ef	0.8±0.03b	0.91±0.04b

编号	维生素C/(mg/kg)		可溶性蛋白质/(mg/g)
编号	盆栽试验	田间试验	盆栽试验	田间试验
1	458.29±12.91e	438.71±2.60g	9.32±0.24ghi	9.85±0.12ij
2	239.85±35.87hi	193.84±5.24m	11.36±1.27fgh	12.66±0.44g
3	254.39±10.82hi	271.67±4.55k	12.54±0.24de	13.72±0.85ef
4	202.59±12.48i	252±6.15l	7.84±0.56i	8.27±0.52kl
5	460.97±14.46e	485.46±6.60e	7.49±0.73i	8.02±0.22l
6	448.02±21.38ef	460.35±10.20f	9.87±0.32ghi	9.15±0.56ijk
7	297.53±13.55gh	312.95±9.63j	13.34±0.49bcde	14.58±0.57cde
8	342.19±17.13g	361.43±5.01i	9.15±0.23hi	9.94±0.28i
9	295.24±25.87gh	312.60±2.75j	9.97±0.53gh	11.34±0.55h
10	584.77±38.76cd	568.34±12.13cd	15.03±0.61bc	14.49±0.37cde
11	744.66±27.79a	762.67±8.17a	12.02±1.18def	14.01±0.48de
12	587.69±15.84bc	611.61±3.07b	13.06±0.34cde	11.63±0.56h
13	617.55±34.92b	598.22±10.67b	11.76±0.97efg	12.76±0.31g
14	546.38±12.75cd	574.08±6.14c	7.42±0.43i	8.89±0.21jkl
15	559.12±22.96cd	572.25±4.29cd	10.04±1.34gh	11.1±0.18h
16	541.44±16.45cd	553.72±14.99d	12.96±0.7cde	14.11±0.17cde
17	448.6±14.74e	471.32±10.37ef	17.12±1.64a	18.26±0.55a
18	503.57±81.13de	488.95±11.88e	15.43±0.87b	16.03±0.13b
19	361.24±12.39fg	382.57±4.09h	13.59±0.51bcd	15.05±0.42c
20	232.02±12.19hi	257.44±14.15kl	15.32±0.36bc	14.99±0.47cd
21	450.79±48.62e	474.29±9.83ef	12.1±1.01de	12.93±0.39fg