Sowing times affect flowering, pollen viability and seed yield of Zinnia elegans cvs. ‘Lilliput’ and ‘Super Yoga

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
Rimsha Asghar
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Abstract

A study was conducted to evaluate the influence of various sowing times on flowering, pollen viability and seed yield of zinnia (Zinnia elegans) cultivars ‘Lilliput᾿ and ‘Super Yoga᾿ under Faisalabad, Pakistan conditions. Seeds of both Zinnia cultivars were sown in 128-cell plug trays at 20 days interval from March 14 to August 20, during 2019. Seedlings were transplanted in thoroughly prepared field beds after 15 days of each sowing, according to factorial arranged randomized complete block design, with three replications. Data were recorded for various growths, flowering traits, pollen viability and seed related parameters. Super Yoga excelled over Lilliput for most the studied traits except number of lateral shoots, flowers per plant, unopened flower buds, pollen viability and seed yield per plant; values of these traits were higher for Lilliput than Super Yoga. Significant variation among various sowing times was recorded in both cultivars. Seeds sown on March 14, 2019 performed best compared to later sowing times for plant height, number of lateral shoots per plant, length of the lateral shoots, leaf area, number of flowers per plant, flower diameter, pollen viability, seed yield per plant and seed viability. However, total number of un-opened flower buds, seed weight per flower and 100-seed weight were more in April 03 sowing, although statistically similar to March 14 sowing. Seed yield declined gradually with delay in sowing; 66% less seed yield in June 20 sowing. Further delay in sowing did not produce seed. It was concluded that Zinnia should be sown by mid-March for getting high seed yield of good quality; later sowing, even during first week of April, resulted in 17.5% decrease in seed yield.
播种时间对百日菊的开花、花粉活力和种子产量有影响小人国和超级瑜伽
摘要研究了不同播种时间对百日草品种小人国开花、花粉活力和种子产量的影响᾿ 和“超级瑜伽”᾿ 在巴基斯坦费萨拉巴德的条件下。2019年3月14日至8月20日,两个百日菊品种的种子以20天的间隔播种在128个细胞插盘中。每次播种15天后,根据析因安排的随机完全区组设计,将幼苗移植到准备充分的田地床上,进行三次重复。记录了各种生长、开花性状、花粉活力和种子相关参数的数据。Super Yoga在除侧芽数、单株花数、未开放花蕾数、花粉活力和单株种子产量外的大多数研究性状上都优于小人国;这些特质在小人国的价值高于超级瑜伽。两个品种在不同播种时间之间都有显著差异。与后期播种时间相比,2019年3月14日播种的种子在株高、单株侧芽数、侧芽长度、叶面积、单株花数、花径、花粉活力、单株种子产量和种子活力方面表现最好。然而,4月3日播种的未开放花蕾总数、每花种子重量和100粒种子重量更多,尽管在统计上与3月14日播种相似。种子产量随播种延迟而逐渐下降;6月20日播种时种子产量减少66%。播种的进一步推迟并没有产生种子。结果表明,为了获得优质高产的百日菊种子,应在3月中旬前播种;即使在4月的第一周播种,也会导致种子产量下降17.5%。
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来源期刊
Pakistan Journal of Agricultural Sciences
Pakistan Journal of Agricultural Sciences AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
1.80
自引率
25.00%
发文量
18
审稿时长
6-12 weeks
期刊介绍: Pakistan Journal of Agricultural Sciences is published in English four times a year. The journal publishes original articles on all aspects of agriculture and allied fields.
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