CAJ | 학술논문

[目的]揭示观赏羽扇豆种子特性、变异规律及其对苗期生长的影响。[方法]该研究以选育的4个家系种子为材料，分析了种子表型特性、种子萌发及与苗期生长的相关性。[结果]观赏羽扇豆4个家系间存在丰富的变异，粉色种子体积最大，红色种子千粒重最重，不同家系种子性状变异系数为2.97%~14.34%，种子比重、千粒重因变异程度高，可作为育种选择重要性状指标。观赏羽扇豆种子重量变异主要依赖种子宽度的变异，种子长度变异小。不同家系种子萌发始于播种后第2 d，萌发期为5 d，粉色、红色种子萌发速率系数和萌发指数高于蓝色种子，但蓝色种子发芽率最高。观赏羽扇豆种子千粒重与种子发芽率、发芽势种苗保存率存在显著正相关，种子圆且大利于萌发。观赏羽扇豆饱满种子萌发率高、发芽快、苗保存率高，种子长宽比与苗期小叶数量存在显著关系。[结论]观赏羽扇豆不同家系种子存在丰富变异，通过种子宽变异实现种子千粒重、比重的变异，种子圆、大、饱满利于萌发，且与苗期生长存在联系。
[목적]게시관상우선두충자특성、변이규률급기대묘기생장적영향。[방법]해연구이선육적4개가계충자위재료，분석료충자표형특성、충자맹발급여묘기생장적상관성。[결과]관상우선두4개가계간존재봉부적변이，분색충자체적최대，홍색충자천립중최중，불동가계충자성상변이계수위2.97%~14.34%，충자비중、천립중인변이정도고，가작위육충선택중요성상지표。관상우선두충자중량변이주요의뢰충자관도적변이，충자장도변이소。불동가계충자맹발시우파충후제2 d，맹발기위5 d，분색、홍색충자맹발속솔계수화맹발지수고우람색충자，단람색충자발아솔최고。관상우선두충자천립중여충자발아솔、발아세충묘보존솔존재현저정상관，충자원차대리우맹발。관상우선두포만충자맹발솔고、발아쾌、묘보존솔고，충자장관비여묘기소협수량존재현저관계。[결론]관상우선두불동가계충자존재봉부변이，통과충자관변이실현충자천립중、비중적변이，충자원、대、포만리우맹발，차여묘기생장존재련계。
Objective] This study was conducted to reveal seed characteristics, varia-tion and their effects on seedling growth of ornamental lupins. [Method] The pheno-typic characteristics and germination rate of the seeds of four excel ent lupin pedi-grees were measured, and then their correlations with seeding growth were ana-lyzed. [Result] There were abundant variations among the four ornamental lupin pedigrees. Pink seeds had the largest volume and red seeds had the largest 1 000-seed weight. The variation coefficients for the seed morphological traits among the four pedigrees ranged from 2.97% to 14.34%. Seed specific weight and 1 000-seed weight could be used as important indicators for selection in breeding because of their higher variability. Seed weight variation of ornamental lupin was mainly depen-dent on seed width variation. There was smal variation in seed length. The seeds of the four ornamental lupin pedigrees started to germinate one day after sowing, and the germination period was 5 d. Germination rate coefficient and germination index of pink and red seeds were higher than those of blue seeds, but blue seeds had the largest germination rate. 1 000-seed weight shared significantly positive correlations with seed germination rate, germination potential and seedling retention rate. Round and large seeds had some advantages in germination. Ful seeds had higher germination rate and speed, and seedling retention rate. There was a signifi-cant relationship between seed length-width ratio and the number of leaflets of seedlings. [Conclusion] The results provided references for the evaluation of seed phenotypic diversity and breeding research of ornamental lupins.