Morphological and genetic diversity in citrus genotypes to substantiate rootstock breeding for root rot resistance
Downloads
Published
Keywords:
Citrus, Phytophthora, SSR markers, variability.Issue
Section
License
Copyright (c) 202 Indian Journal of Horticulture

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Investigations were conducted on six citrus rootstocks, viz., rough lemon (RL), trifoliate orange (TO),Abstract
Swingle citrumelo (SC), X 639 (X), Rangpur lime (RA) and Gou Tou (GT), to assess the morphological and
genetic variability; and reaction against Phytophthora. Smooth trunk surface was recorded in all the genotypes.
Three genotypes had erect growth habit, while it was spreading in Gou Tou (GT), Rangpur lime (RA) and
rough lemon (RL). The leaves of GT, RA and RL were of unifoliate, while trifoliate orange (TO) had trifoliate
leaf and Swingle citrumelo (SC) and X 639 (X) had multifoliate leaf division. No variation was recorded with
respect to flowering season in all citrus rootstocks, i.e. mid February to last week of March. Fifty-five SSR
markers were used for evaluation of genetic diversity amongst the six rootstocks. Twenty markers exhibited
high polymorphism and showed wide allelic diversity. Capacity of each SSR to show polymorphic loci, varied
from 0.29 (F98) to 0.83 (CCSME46 and CCSMEc4) with an average PIC value of 0.61. The resolving power
(Rp) was highest for the primer CCSME43 (8.33) and was lowest for F90 (1.33). Significant differences were
observed in the value of MI and were found to be the highest for primer F40 (9.25), while minimum MI was
recorded for F98 (0.38). The PIC values of a marker vary with the crop and the set of the genotypes used.
The reduction in the number of sporangia and lesion size in trifoliate orange and Swingle citrumelo indicated
their tolerance against Phytophthora nicotianae var. parasitica. The number of sporangia counted after 48 h
of incubation showed that all leaf baits of each rootstock were attacked by large number of sporangia. The
number of sporangia on each leaf disc of rootstocks decreased after 48 h as the sporangia germinated into
mycelium on the edges of leaf discs.
How to Cite
Downloads
Similar Articles
- Pushpa Kumari, Kalyan Barman, V.B. Patel, Swati Sharma, Basudev Kole, Variability of bioactive properties and antioxidant activity in commercially grown litchi cultivars in India , Indian Journal of Horticulture: Vol. 75 No. 03 (2018): Indian Journal of Horticulture
- Touseef Hussain, B P Singh, S K Kaushik, Mehi Lal, Anubha Gupta, Duplex PCR for detection of early and late blight coinfecting potato , Indian Journal of Horticulture: Vol. 76 No. 02 (2019): Indian Journal of Horticulture
- Pranabjyoti Sarma, V.B. Singh, D.S. Yadav, Variability and character associationship study in colocasia , Indian Journal of Horticulture: Vol. 67 No. 03 (2010): Indian Journal of Horticulture
- Smriti Bansal, P. K. Mahajan, R. K. Gupta, Ashu Chandel, Pramod Kumar, Sarita Devi, Variability analysis and PCA studies for fruiting behaviour in high density guava , Indian Journal of Horticulture: Vol. 81 No. 01 (2024): Indian Journal of Horticulture
- Asha Yadav, Anil K. Poonia, Subhash Kajla, Rapid regeneration and molecular assessment of genetic stability using RAPD markers in stevia , Indian Journal of Horticulture: Vol. 73 No. 02 (2016): Indian Journal of Horticulture
- Swati Saha, Pritam Kalia, A.K. Sureja, Preeti Singhal, S. Sarkar, Evaluation of European carrot genotypes for their nutritive characters , Indian Journal of Horticulture: Vol. 72 No. 04 (2015): Indian Journal of Horticulture
- R.S. Meena, G. Lal, N.K. Meena, Estimates of genetic diversity for morphological and yield contributing traits in coriander genotypes , Indian Journal of Horticulture: Vol. 75 No. 03 (2018): Indian Journal of Horticulture
- Anuradha Upadhyay, Ulhas S. Kadam, Priya Chacko, G.S. Karibasappa, Microsatellite and RAPD analysis of grape (Vitis spp.) accessions and identification of duplicates/misnomers in germplasm collection , Indian Journal of Horticulture: Vol. 67 No. 01 (2010): Indian Journal of Horticulture
- A.J. Gupta, T.S. Verma, R. Bhat, S. Mufti, Studies on genetic variability and character association in temperate carrot , Indian Journal of Horticulture: Vol. 69 No. 01 (2012): Indian Journal of Horticulture
- A.K. Singh, Ingita Gohain, S. Shyamalamma, Morphological variability in jackfruit grown under agro-forestry system of Tripura , Indian Journal of Horticulture: Vol. 75 No. 03 (2018): Indian Journal of Horticulture
<< < 18 19 20 21 22 23 24 25 26 27 > >>
You may also start an advanced similarity search for this article.
Most read articles by the same author(s)
- Anirudh Thakur, G. S Sidhu, Harminder Singh, In vitro multiplication of peach rootstocks , Indian Journal of Horticulture: Vol. 80 No. 03 (2023): Indian Journal of Horticulture
- Pushpendra Rajput, Anirudh Thakur, Harminder Singh, Jagveer Singh, Sukhjeet Kaur, Ramanna Koulagi, Dharminder Pathak, Screening of peach rootstock hybrids for resistance to root-knot nematode , Indian Journal of Horticulture: Vol. 78 No. 02 (2021): Indian Journal of Horticulture
- Anirudh Thakur, Variations in the hybrid progeny of low chill white × yellow fleshed peaches , Indian Journal of Horticulture: Vol. 79 No. 4 (2022): Indian Journal of Horticulture
- Yamini Sharma, Harminder Singh, Anirudh Thakur, Effect of training system and in row spacing on yield and fruit quality of peach in the sub-tropical regions , Indian Journal of Horticulture: Vol. 74 No. 03 (2017): Indian Journal of Horticulture
- Indira Devi, Harminder Singh, Anirudh Thakur, Jagveer Singh, Optimization of pollen storage conditions for low chill peach cultivars , Indian Journal of Horticulture: Vol. 75 No. 04 (2018): Indian Journal of Horticulture
- Harminder Singh, Anirudh Thakur, S.K. Jawandha, Summer stratification and germination: A viable option for recovery of hybrid seedlings in low chill peach and nectarines , Indian Journal of Horticulture: Vol. 74 No. 02 (2017): Indian Journal of Horticulture
- A.S Sundouri, Harminder Singh, M.I.S Gill, Anirudh Thakur, A.K Sangwan, In-vitro germination of hybrid embryo rescued from low chill peaches as affected by stratification period and embryo age , Indian Journal of Horticulture: Vol. 71 No. 02 (2014): Indian Journal of Horticulture
- K.S. Gill, H.S. Dhaliwal, B.V.C. Mahajan, Pre-harvest application of salicylic acid and n-propyl gallate for enhancing shelf-life of guava , Indian Journal of Horticulture: Vol. 73 No. 02 (2016): Indian Journal of Horticulture
- Rachna Arora, Sukhjit Kaur Jawandha, K.S. Gill, Anirudh Thakur, Physico-chemical attributes and shelf life of aonla as influenced by packing materials and storage conditions , Indian Journal of Horticulture: Vol. 76 No. 01 (2019): Indian Journal of Horticulture
- Harish Kumar, Rachna Arora, Anirudh Thakur, Sandeep Sharma, Impact assessment of growing media and bioinoculents on growth and bud take of rough lemon , Indian Journal of Horticulture: Vol. 77 No. 03 (2020): Indian Journal of Horticulture