1 The root contains three functional internal parts, the meristem, th elongation zone, and maturation zone. bracteatus.ĭuring the developmental process of roots, they are organized gradually from a simple form to a highly hierarchical architecture. It is important to reveal the rooting procedure and find out slip rooting optimal method for improving the propagation rate of Ananas comosus var. The lack of developed AR primordia can be linked to a low rate of slip rooting. Unlike the suckers and crown buds, which form adventitious root primordia in the stem when they grow on the mother plant, the slips does not form AR primorida inside the stem when they grow on the mother plants. bracteatus, it is a good alternative way of propagating. However, there are about 4–6 slips on a fruit of Ananas comosus var. There are about 1–2 suckers on a plant, which limit the effective regeneration of Ananas comosus var.
![root primordia tomato plant root primordia tomato plant](https://vignette.wikia.nocookie.net/gardener/images/4/49/Tomato_Greenback.jpg)
bracteatus is self-incompatible, propagated by suckers in production. bracteatus is an economical important horticultural plant species because of its red fruit and colorful leaves. The number of primary xylem poles in AR is about 30.Īnanas comosus var. The vascular tissues in the AR develop and are connected with vascular tissue of the stem before the AR grew out the stem. The AR primordia originates from the parenchyma cells located on the borderline between the cortex and stele. The slip stem structure is quite different from other monocots, which consists of epidermis, cortex, and stele with vascular tissues distributed in the cortex and stele. The proper supplementary of ABT can enhance the soluble sugar content, soluble protein content, polyphenol oxidase (PPO) activity and peroxidase (POD) enzyme activity, which resulted in the improvement of rooting. The results showed that, slip cuttings treated with 100 mg/L of Aminobenzotriazole (ABT) for 6 hrs, cultured in river sand: coconut chaff: garden soil 2:2:1 medium is the optimal method for rooting. In order to screen the optimal methods for slips rooting and reveal the anatomic procedure of slip rooting, this study induced slip rooting by different treatment of growth regulator, culture medium, observed the slip stem structure, AR origination and formation procedure through paraffin sections. Growth regulator treatment, and culture medium are imperative factors that affect slip growth and rooting.
![root primordia tomato plant root primordia tomato plant](https://ofags.com/wp-content/uploads/2019/08/Tomato-Stems-Primordia.jpg)
Adventitious root (AR) induction is essential for the propagation of Ananas comosus var.
![root primordia tomato plant root primordia tomato plant](http://i.ytimg.com/vi/r9WA7OJAxwM/maxresdefault.jpg)
There are about 4–6 slips on a fruit, and they are good materials for effective regeneration of Ananas comosus var.