Crops ›› 2019, Vol. 35 ›› Issue (4): 49-54.doi: 10.16035/j.issn.1001-7283.2019.04.008

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Study on the Absorption and Distribution of Zinc and Iron between Maize Hybird and Its Parents

Ping Wenjing,Guo Yuan,Huang Yaqun,Chen Jingtang,Zhu Liying,Zhao Yongfeng,Guo Jinjie   

  1. College of Agronomy, Hebei Agricultural University/Hebei Sub-Center of National Maize Improvement Center, Baoding 071000, Hebei, China
  • Received:2018-12-13 Revised:2019-05-10 Online:2019-08-15 Published:2019-08-06
  • Contact: Yaqun Huang

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Abstract:

Using high grain zinc and iron concentration parent NXR22 (female), low grain zinc and iron concentration parent NXR12 (male), and their F1, to analyze the concentration and accumulation of zinc and iron in different parts of leaves, stems, and grains, and the characteristics of zinc and iron absorption and distribution in parents and hybrid. The results showed that there were significant differences in zinc and iron concentration and accumulation in leaves, stems and grains of maize with different genotypes. The concentration of zinc and iron in leaves and stems of different ear positions of hybrids was between their parents and tended to the parents with high concentration of zinc-iron in grains. The accumulation of zinc and iron in leaves and stems of different ear positions of hybrids showed obvious heterosis, which was significantly higher than that of their parents. The concentration of zinc and iron in leaves and stems of parents and hybrids increased from silking stage to mature stage. The concentration of zinc in hybrid grain tended to be higher than that of the female parent, and the amount of accumulation showed heterosis. The concentration of iron in hybrid grain was between parents, and the accumulation tended to be higher than that of the female parent with high concentration of zinc and iron.

Key words: Maize (Zea mays L.), Zinc, Iron, Absorption and distribution

Fig.1

Comparison of zinc and iron content and accumulation between F1 and parents at different leaf positions Different lowercase letters in the same position are significantly different at 0.05 level among different genotypes. The same below"

Table 1

Relative value (mature stage/silking stage) of zinc and iron accumulation in leaves of F1 and parents"

叶片Leaf Zn Fe
NXR22 F1 NXR12 NXR22 F1 NXR12
穗上叶Upper Leaf 1.16 1.18 1.50 1.23 1.48 1.28
穗位叶Ear Leaf 1.42 1.31 2.20 1.91 2.66 1.93
穗下叶Lower Leaf 1.50 0.39 0.46 2.00 1.00 0.61

Fig.2

Comparison of zinc and iron content and accumulation between F1 and parents at different stem positions"

Table 2

Relative value (mature stage/silking stage) of zinc and iron accumulation in stems of parents and F1"

茎秆Stem Zn Fe
NXR22 F1 NXR12 NXR22 F1 NXR12
穗上茎Upper stem 1.13 1.87 1.18 2.62 2.17 2.81
穗位茎Ear stem 0.39 3.18 0.51 0.46 2.42 2.00
穗下茎Lower stem 1.33 2.05 0.55 2.30 2.47 2.06

Fig.3

Comparison of zinc and iron content and accumulation between F1 and parents"

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