Effect of Position of Cutting and Growth Regulator Application on Vegetative Proliferation of Stem Cuttings of Lime (Citrus aurantifolia Swingle

Abstract

This study was conducted during the winter of 2008 to investigate the effect of seradix3 hormone on the vegetative growth of lime stem cuttings. Three types of lime stem cuttings were used: basal cuttings, medium cuttings and terminal cuttings, whereas three concentration levels of hormone plus the control have been used in the treatment of the cuttings. These were pure hormone, 15 gm hormone +15 gm baby powder (1:1), 15g hormone +30g baby powder (1:2) and untreated control. Three readings had been taken for the parameters: Root%, number of roots, length of roots, percentage of shoots, no of shoots and no of leaves. In the first reading after 23 days from planting, the results showed no rooting. The percentage of shoots the basal cutting treated with pure gave highest shoots% followed by medium treated with 1:1, while the lowest basal treated with 1:1 and basal untreated. The highest number of shoots was obtained from the basal cuttings treated with pure seradix3 powder, followed by medium cuttings untreated, while the lowest number of shoots was obtained from the basal cuttings with untreated. The highest number of leaves was obtained from the basal cuttings treated with pure seradix3 powder, followed by the untreated basal cuttings while the lowest number of leaves was obtained from the medium cuttings treated with 1:1 (seradix3: baby powder). Also no rooting VII (after 30days from planting), The percentage of shoots the basal cutting treated with pure gave highest shoots% followed by basal treated with (1:1, 1:2), while the lowest medium treated with 1:1 the highest number of leaves was obtained from the medium cuttings treated with 1:1 (seradix3: baby powder), followed with the basal cutting treated with pure seradix3 powder. The number of shoots, the basal cuttings treated with pure seradix3 powder gave the highest number of shoots followed with the medium cuttings treated with the 1:1 (seradix3 powder: baby powder) while the lowest number of shoots was obtained from the basal cuttings treated with 1:1 (seradix3 powder: baby powder). The highest number of leaves was obtained from the medium cuttings treated with 1:1 (seradix3 powder: baby powder), followed by the basal cutting treated while pure seradix3 hormone, lowest number of leaves was obtained from the basal cutting treated with 1:1 seradix3: baby powder. In the 3 rd reading (after two months from planting), the highest percentage of rooting was obtained from the basal cuttings untreated, followed by basal cutting treated with pure seradix3 hormone, while the lowest percentage of rooting was obtained from the medium cuttings treated 1:1(seradix3: baby powder). The highest number of roots was obtained from basal cuttings untreated, followed by medium cuttings treated 1:1(seradix3: baby powder), while the lowest no. of roots was obtained from the basal cuttings treated 1:1(seradix3: baby powder). The longest roots were obtained from untreated basal cuttings, followed by basal cuttings treated with 1:1(seradix3: baby powder), while the shortest roots were obtained from the basal cuttings treated with pure hormone. The percentage of shoots the basal cutting treated with pure seradix3 gave highest shoots% followed by basal untreated while the lowest basal treated with 1:1. The number of shoots the basal untreated cuttings gave the highest number followed by the medium cuttings treated with 1:1 (seradix3: baby powder), while the lowest number of shoots was obtained from the basal cuttings treated with 1:2 (seradix3: baby powder).The highest number of leaves was obtained from the basal VIII cutting treated with 1:2 (seradix3: baby powder), followed by medium cuttings treated with 1:1 (seradix3: baby powder) while the lowest number of leaves was obtained from the basal cuttings treated with pure sreadix3.