干旱区生态环境知识资源中心(Arid): Can Modification of Sowing Date and Genotype Selection Reduce the Impact of Climate Change on Sunflower Seed Production?

Arid

DOI	10.3390/agriculture13112149
	Can Modification of Sowing Date and Genotype Selection Reduce the Impact of Climate Change on Sunflower Seed Production?
	Krstic, Milos; Mladenov, Velimir; Banjac, Borislav; Babec, Brankica; Dunderski, Dusan; Cuk, Nemanja; Gvozdenac, Sonja; Cvejic, Sandra; Jocic, Sinisa; Miklic, Vladimir; Ovuka, Jelena
通讯作者	Ovuka, J
来源期刊	AGRICULTURE-BASEL
EISSN	2077-0472
出版年	2023
卷号	13 期号:11
英文摘要	Climate change projections for the 21st century pose great threats to semi-arid regions, impacting seed production and the quality of sunflowers. Crop yields are negatively affected by climate variability, especially in the event of droughts during the crucial growth stages. Understanding the relationships between agrometeorological, genetic, and agronomic factors is crucial for maintaining crop sustainability. Optimal sowing dates are an essential condition for maximizing crop genetic potential, but challenges come from annual weather variations. This study analyzes how sunflower genotypes respond to different sowing dates under climate change and focuses on the conditions for obtaining maximum seed yields and favorable agronomic traits. From 2020 to 2022, the experiment featured six genotypes sown across four different dates at two-week intervals, simulating seed sunflower production. The results obtained by ANOVA indicated that the seed yield and oil yield were significantly affected by the sowing date, the genotype, and their interaction, with coefficients of variation ranging from 7.6% for oil yield to 41.1% for seed yield. Besides seed yield and oil yield, LDA biplot and Discriminant Functions confirmed that seed germination energy also played a significant role in separating genotypes into clusters. A Visual Mixed Model showed that shifting the optimal sowing date (mid-April) to early May allows a reduction in the number of days the plants spend in critical growth stages, thereby escaping stressful conditions during pollination and seed filling. The findings resulted, on average, in increased yields and improved seed quality, which are the primary goals of seed production, but not in increased 1000-seed weight. Notably, high temperatures during the critical sunflower growth stages negatively affected the measured parameters of seed production. The increased precipitation during seed filling boosted the 1000-seed mass and seed yield. Extended flowering reduced the growth rate and seed germination, but longer seed filling increased the 1000-seed mass and seed yield. Our future breeding goals will be to create genotypes with a shorter flowering period and an extended seed-filling period to better respond to climate change.
英文关键词	climate change sunflower inbred line seed production sowing date germination seed yield 1000-seed mass
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001107809700001
WOS关键词	YIELD COMPONENTS ; CROP MANAGEMENT ; DROUGHT STRESS ; PHENOLOGY ; QUALITY ; TRAITS ; GROWTH ; PUNJAB
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395161
推荐引用方式 GB/T 7714	Krstic, Milos,Mladenov, Velimir,Banjac, Borislav,et al. Can Modification of Sowing Date and Genotype Selection Reduce the Impact of Climate Change on Sunflower Seed Production?[J],2023,13(11).
APA	Krstic, Milos.,Mladenov, Velimir.,Banjac, Borislav.,Babec, Brankica.,Dunderski, Dusan.,...&Ovuka, Jelena.(2023).Can Modification of Sowing Date and Genotype Selection Reduce the Impact of Climate Change on Sunflower Seed Production?.AGRICULTURE-BASEL,13(11).
MLA	Krstic, Milos,et al."Can Modification of Sowing Date and Genotype Selection Reduce the Impact of Climate Change on Sunflower Seed Production?".AGRICULTURE-BASEL 13.11(2023).