Rooting behavior of pomegranate (Punica granatum L.) hardwood cuttings in relation to genotype and irrigation frequency

• Main Authors: Salih, Kocher Omer, Mohammed, Aram Akram, Faraj, Jamal Mahmood, Raouf, Anwar Mohammed, Tahir, Nawroz Abdul-Razzak
• Format: Journal Article
• Language: English
• Published: 29-06-2024
• Subjects: Quantitative Biology - Other
• DOI: 10.48550/arxiv.2407.00408

The study was conducted to determine the best irrigation frequency for
rooting hardwood cuttings of some pomegranate genotypes that are cultivated in
Halabja province, Kurdistan Region, Iraq. The hardwood cuttings were collected
from 11 genotypes, which were 'Salakhani Trsh' (G1), 'Salakhani Mekhosh' (G2),
'Amriki' (G3), 'Twekl Sury Trsh' (G4), 'Twekl Astury Naw Spy' (G5), 'Hanara
Sherina' (G6), 'Kawa Hanary Sherin' (G7), 'Kawa Hanary Trsh' (G8), 'Malesay
Twekl Asture' (G9), 'Malesay Twekl Tank' (G10), and 'Sura Hanary Trsh' (G11).
The genotypes were subjected to irrigation applications by 1-day, 2-day, 7-day,
or 10-day frequencies. Among pomegranates, G11, G6, and G7 produced 95, 90, and
83% rooting percentages, which were significantly higher than the rest of other
genotypes. The lowest rooting percentages (28, 36, 38, and 40%) were found in
G1, G5, G3, and G10, respectively. The effect of irrigation frequencies on the
genotypes confirmed that a 7-day frequency was the best irrigation frequency to
achieve the maximum rooting percentages (93, 86, 80, 73, 53, and 40%) in G6,
G9, G2, G4, G3, and G1, respectively. In contrast, the minimum rooting
percentage (20%) was recorded in G3 with a 1-day frequency and in G1 with
10-day frequency. In this study, it was found that the cuttings of G11, G6, and
G7 had the best ability to form roots, and irrigation with a 7-day frequency
was the best for the cuttings of all the 11 pomegranate genotypes investigated.