| 付国召1,2，张志伟 1
，任志宽 2
，刘柏庆 1
，董亚楠 1
，杨翠芹1.GA3 与 6-BA 复配处理对甘薯催芽育苗的影响[J].广东农业科学,2023,50(6):10-18 |
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GA3 与 6-BA 复配处理对甘薯催芽育苗的影响 |
| Effects of GA3 and 6-BA Combination Treatment on Germination and Seedling Raising of Sweet Potato |
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| DOI：10.16768/j.issn.1004-874X.2023.06.002 |
| 中文关键词: 甘薯 GA3 6-BA 复配 催芽 育苗 |
| 英文关键词: sweet potato GA3 6-BA combination germination seedling raising |
| 基金项目:四川省衔接推进乡村振兴科技专项（2022ZHXC0067）；四川省科技计划项目（2022ZHYZ0006） |
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| 中文摘要: |
| 【目的】为有效缓解生产中 GA3 浸种催芽所导致的甘薯细苗、弱苗问题，研究 GA3 与 6-BA 复配
浸种处理提升薯苗品质的可行性。【方法】设 1、5、10 mg/L GA3 单独浸种及其分别与 5 mg/L 6-BA 复配后浸
种处理，命 名为 G 组与 GB 组，另设清水浸种（G0，CK1
）和 5 mg/L 6-BA 单独浸种（G0B，CK2
），共 8 个处
理，研究其对甘薯品种‘心香’薯块萌芽、薯苗生长形态、单苗质量、干物质率及薯苗采收量的影响。【结果】
1 mg/L GA3 浸种处理对调控甘薯萌芽与薯苗生长形态效果最好，薯块平均根眼萌动数达 11 个，总芽数达 16.33 个，
平均苗高达 8.80 cm，苗基部直径为 3.01 mm。随着 GA3 浓度升高，苗基部直径、单苗质量、干物质率均变小，
薯苗品质变差。在 GA3 与 6-BA 复配处理后，薯苗品质得到有效改善，且 GA3 浓度越高效果越显著，10 mg/L
GA3 与 5 mg/L 6-BA 复配浸种处理提升薯苗品质效果最好，苗基部直径为 3.40 cm，干物质率最高，且单苗质量
相对 GA3 单独浸种处理有所提高。两个处理均可有效提高薯苗的采收量，且差异较小，其中 GA3 单独处理组
G1+G5+G10 的采收量为 282 株，但薯苗品质较差，而 GA3 与 6-BA 复配处理组 G1B+G5B+G10B 的采收量为 281 株，
薯苗品质明显改善。【结论】综上，6-BA 对于高浓度 GA3 浸种催芽所带来的负面作用具有一定的缓解，使得薯
苗茎秆粗壮、干物质率提高、种苗品质提升，且以 10 mg/L GA3 与 5 mg/L 的 6-BA 复配处理对甘薯品种‘心香’
缓解效果最为明显。 |
| 英文摘要: |
| 【Objective】In order to effectively alleviate the problem of sweet potato thin and weak seedlings caused
by GA3
soaking and germination in production, the feasibility of GA3
and 6-BA combination soaking treatments to improve
the quality of sweet potato seedlings was studied.【Method】The seeds were soaked with 1, 5 and 10 mg/L GA3
alone and
mixed with 5 mg/L 6-BA respectively, which were named as group G and group GB. In addition, there are two treatments of
water immersion (G0, CK1
) and 5 mg/L 6-BA separate immersion (G0B, CK2
), a total of 8 treatments were conducted to study
its effects on the germination of sweet potato tubers, the growth morphology of sweet potato seedlings, weight of the single
seedling, dry matter percentage and the number of harvested seedlings in ‘Xinxiang’.【Result】The results showed that 1
mg/L GA3
soaking treatment had the best effect on regulating the germination of sweet potato and the growth morphology
of sweet potato seedlings. The average number of root eye germination of sweet potato was 11, the total number of buds was
16.33, the average seedling height was 8.80 cm, and the diameter of the seedling base was 3.01 mm. However, with the increase of GA3
concentration, the diameter of the seedling base ,the weight of the single seedling and the dry matter percentage
became smaller, and the quality of the sweet potato seedlings became worse. After GA3
and 6-BA compound treatment, the
quality of potato seedlings was effectively improved. The higher the concentration of GA3
, the more significant the effect was.
Among them, 10 mg/L GA3
and 5 mg/L 6-BA compound soaking treatment had the best effect on improving the quality of potato
seedlings. The diameter of the seedling base was 3.40 cm, the dry matter percentage was the highest, and the weight of the single
seedling was higher than that of GA3
soaking treatment alone. The two treatment groups can effectively improve the number of
harvested potato seedlings, and the difference is very small. Among them, the total number of seedlings harvested in the GA3
treatment group(G1+G5+G10) was 282, but the quality of potato seedlings was poor. The total number of seedlings harvested in
the combined treatment group of GA3 and 6-BA(G1B+G5B+G10) was 281, and the quality of potato seedlings was significantly
improved.【Conclusion】In conclusion, 6 -BA can alleviate the disadvantages caused by high concentration GA3
soaking seed,
make the stems of sweet potato seedlings thick, the dry matter percentage increases, and the quality of the seedlings improves.
Furthermore, the combination of 10 mg/L GA3
and 5 mg/L 6-BA could effectively alleviate the seedling we akness caused by
high concentration of GA3
on sweet potato variety ‘Xinxiang’. |
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