Role of Pod and Seed Features in Determining In situ Germination in Groundnut (Arachis hypogaea L.)
150 / 106
Authors
-
KIRAN DASANAL
Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad-580005, India
Author
-
VK DESHPANDE
Department of Seed Science and Technology, University of Agricultural Sciences, Dharwad-580005, India
Author
-
BN MOTAGI
Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad-580005, India
Author
-
RAMESH S BHAT
Department of Agricultural Biotechnology, University of Agricultural Sciences, Dharwad-580005, India
Author
-
AISHWARYA A ANGADI
Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad-580005, India
Author
-
JAYANTH M
Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad-580005, India
Author
Keywords:
In situ germination, Pod wall thickness, Pre-harvest sproutingAbstract
In situ germination (pre-harvest sprouting) in groundnut is an emerging constraint under changing
climatic conditions, particularly in bunch-type cultivars lacking fresh seed dormancy. The present study examined
the role of pod and seed morphological traits in governing in situ germination tolerance in selected sensitive and
tolerant groundnut recombinant inbred lines (RILs), their parents, and two standard checks. Based on seed
availability and mean in situ germination percentage recorded over Kharif 2022 and Kharif 2023, sixteen contrasting
RILs along with parents and checks were evaluated for pod and seed traits during 2023. Among the traits assessed,
pod wall thickness (PWT) emerged as the most critical determinant of in situ germination tolerance. Pod wall
thickness exhibited wide and significant variation, ranging from 0.55 mm (N × T 278) to 1.55 mm (T × N 75). A
strong inverse relationship was observed between PWT and in situ germination percentage (IGP). Tolerant
genotypes possessing thicker pod walls (≥1.00 mm) recorded complete absence of in situ germination, whereas
sensitive genotypes with thinner pod walls (<0.95 mm) showed high levels of sprouting (61–79%). In contrast,
other pod and seed traits such as pod length, pod width, seed length, and seed width did not show any consistent
association with in situ germination behaviour. These findings highlight pod wall thickness as a reliable phenotypic
marker for selecting in situ germination–tolerant groundnut genotypes and provide valuable insights for breeding
climate-resilient varieties.
Downloads
References
1. AGRICULTURAL MARKET INTELLIGENCE CENTRE (2025).
PJTAU, Groundnut Outlook: 1-3.
2. SAVAGE GP AND JI KEENAN (1994). The composition and
nutritive value of groundnut seeds. In: Smart J. (ed.), The
groundnut crop, A scientific basis for improvement. Chapman
& Hall, / London / New York. Science, 39: 52-56.
3. NAGARJUN P AND GD RADDER (1983). Studies on induction
of seed dormancy in bunch type groundnut. Seed Research,
11 (1): 24.
4. REDDY PS, VR ZADE AND SN DESHMUKH (1985). CGSI19: A new Spanish bunch groundnut cultivar with fresh seed
dormancy. Journal of Oilseeds Research, 2: 103-106.
5. PATRO HK AND M RAY (2016). Seed dormancy in groundnutA review. International Journal of Tropical Agriculture, 34(1):
31-37.
6. AKSHATA (2022). Investigation on influence of accelerated
ageing on seed quality and assessment of In situ germination
in groundnut (Arachis hypogaea L.) genotypes, M.Sc. (Agri.)
thesis, University of Agricultural Sciences Dharwad, 1-112.
7. PATTANASHETTI SK (2005). Genetic analysis of mutational
origin of diversity in groundnut (Arachis hypogaea L.).
University of Agricultural Sciences, Dharwad, India.
8. HAKE AA, K SHIRASAWA, A Yadawad, M Sukruth, M Patil,
SN Nayak, S Lingaraju, PV Patil, HL Nadaf, MVC Gowda, RS
Bhat (2017). Mapping of important taxonomic and productivity
traits using genic and non-genic trans posable element
markers in peanut (Arachis hypogaea L.). PLoS One 12(10):
e0186113. https://doi.org/10.1371/journal.pone.0186113.
9. IBPGR/ICRISAT (1992). Descriptors for groundnut.
International board of plant genetic resources and international
crops research institute for the semi-arid tropics, Rome, Italy
and Patancheru, Andhra Pradesh, India.
10. MOGALI S, NKB PATIL, H RANJITA, G BALOL, L JAGGAL
(2023). Development of mungbean genotypes for shattering
tolerance and correlation analysis with biochemical and
morphological factors governing pre harvest sprouting.
Legume Research. Epub ahead of print 23 April 2023 DOI
10.18805/LR-5089.
11. CHERALU C, A SATYANARAYANA, N KULKARNI, K
JAGDISHWAR AND MSS REDDY (1999). Combining ability
analysis for resistance to pre-harvest sprouting in mungbean
(Vigna radiata (L) Wilczek). Indian Journal of Genetics and
Plant Breeding, 59(4): 465-472.
12. ANUPAMA S, RK KHULBE AND RK PANWAR (2012).
Evaluation of urdbean (Vigna mungo) germ plasm for preharvest sprouting tolerance. Journal of Food Legumes, 25(3):
183-186.
