CAJ | 학술논문

选用甘肃省甘南州卓尼县种植4年的唐古特大黄种株，从花后第10天开始每隔3 d 测定种子发育动态直至种子全部成熟，风干后测定种子发芽特性，旨在揭示唐古特大黄种子灌浆动态及其与发芽质量的内在联系，为确定种子最佳采收期提供理论和技术依据。结果表明，唐古特大黄种子百粒干重的变化趋势呈“S”型曲线，符合 Logis-tic 方程，快增期在花后12～39 d，开花60 d 后灌浆基本结束。种子脱水速率随灌浆进程的递进持续加快，含水量稳定下降。开花22 d 开始采收的种子具较低萌发能力，此后随灌浆进程的递进，发芽质量指标均显著提高，花后49 d 开始，种子发芽质量指标趋于稳定，开花55 d 后种子含水量下降至10％以下。种子的发芽质量指标与百粒干重和灌浆持续期均呈极显著正相关，而与含水量呈极显著负相关，灌浆速率受天气影响较大，说明唐古特大黄种子成熟度对种子的发芽质量具有显著的影响，种子最佳采收期应在开花后55～60 d（7月下旬至8月上旬），种子含水率在10％左右时分批采收为宜。
선용감숙성감남주탁니현충식4년적당고특대황충주，종화후제10천개시매격3 d 측정충자발육동태직지충자전부성숙，풍간후측정충자발아특성，지재게시당고특대황충자관장동태급기여발아질량적내재련계，위학정충자최가채수기제공이론화기술의거。결과표명，당고특대황충자백립간중적변화추세정“S”형곡선，부합 Logis-tic 방정，쾌증기재화후12～39 d，개화60 d 후관장기본결속。충자탈수속솔수관장진정적체진지속가쾌，함수량은정하강。개화22 d 개시채수적충자구교저맹발능력，차후수관장진정적체진，발아질량지표균현저제고，화후49 d 개시，충자발아질량지표추우은정，개화55 d 후충자함수량하강지10％이하。충자적발아질량지표여백립간중화관장지속기균정겁현저정상관，이여함수량정겁현저부상관，관장속솔수천기영향교대，설명당고특대황충자성숙도대충자적발아질량구유현저적영향，충자최가채수기응재개화후55～60 d（7월하순지8월상순），충자함수솔재10％좌우시분비채수위의。
Flowers of four-year-old Rheum tanguticum plants were labeled with cards on Flourish-blossom Day in Zhuoni county in the Gannan Tibetan autonomous prefecture,Gansu province.The cards were hung on in-florescences with consistent development signs.Seed filling dynamics were measured once every three days during filling duration,starting 10 days after the experiment’s launch.Germination traits were measured after air drying in order to explore the relationship between seed filling dynamics and germination,providing a theo-retical and technical basis for standardizing seed harvesting.The 100-seed dry weight fitted to a logistic equa-tion,with rapid increases during 12-39 days after blossoming and finishing on the 60 th day.The seeds’water content decreased during the seed filling process.Seeds harvested on the 22 nd day following blossom showed low germination ability.Following this point in time,germination quality significantly improved and remained stable until 49 days after blossom.Water content in the seeds decreased to below 10% from 55 days after blos-som.Germination quality indicators were significantly and positively related to the 100-seed dry weight and seed filling duration,but were negatively related to the water content in seeds.The seed filling rate was signifi-cantly affected by the weather.The study thus showed that seed maturity affects germination quality.The best harvest time is 55-60 days after blossom (in late July and early August),when seed water content is approxi-mately 10%.