利用生长和开花性状评价三色堇(Viola spp.)遗传多样性

K. Kaur
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引用次数: 1

摘要

花卉作物的育种计划主要强调在现有的池中增加颜色的可变性,同时保留作物的其他重要的营养和生殖性状。2019- 2021年,旁遮普农业大学卢迪亚纳分校花卉栽培和园林绿化系对三色堇育种计划中产生的20份材料进行了营养和开花性状的评估。A-12株高最高(37.4 cm), A-13株展布最高(42.1 cm), A-11枝数最高(21.6)。品种A-5的开花天数最多(63.9天),品种A-14的开花天数最少(56.5天)。在所有供试材料中,花期最长的是A-5 (96.1 d)。在三色堇材料中,A-11的花产量最高(91.1),A-3的花最大(4.8cm), A-20的花茎最长(11 cm)。相关分析进一步表明,单株花数受植物营养性状(株高、展布和分枝数)的影响。基于形态学数据的聚类分析将其分为三类。这些变化可能有助于三色堇的分类,用于盆栽、床上和展览,对育种者和种植者有益。
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Evaluation of genetic diversity in pansy accessions (Viola spp.) using growth and flowering traits
The breeding programmes of floricultural crops lay prime stress on adding colour variability in the existing pool along with retention of other important vegetative and reproductive traits of the crop. The evaluation of accessions produced in breeding programmes of pansy in the Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana during the year 2019-21was conducted with twenty accessions for vegetative and flowering traits. Maximum plant height was recorded in A-12 (37.4 cm), maximum plant spread in A-13 (42.1 cm) and highest number of branches in A-11 (21.6). The accession A-5 took maximum number of days (63.9days) for flowering whereas the minimum number of days for flowering (56.5 days) was taken by accession A-14. Among all the tested accessions, the maximum duration of flowering was recorded in A-5 (96.1 days). Amongst the pansy accessions, A-11 was maximum flower producing (91.1), while A-3 produced the largest flowers (4.8cm) and flower from A-20 had longest stalk (11 cm). Correlation analysis further showed that the number of flowers per plant was affected by plant vegetative traits (plant height,spread and number of branches). Cluster analysis based on morphological data divided the accessions into three groups. These variations might help in classifying pansy for pot cultivation, bedding and exhibition purposes, which could be beneficial for breeders and growers.
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