Grafting compatibility between selected rootstocks and Tanzanian local tomato cultivars

Abstract

Objective: The objective of this study was to evaluate the effect of different rootstocks on graft success of Tanzanian local tomato cultivars. Eggplant rootstocks (EG190, EG195, EG203 and EG219, and tomato rootstock (Hawaii 7996) were obtained from AVRDC in Taiwan while local tomato cultivars (Tengeru 97, Tanya, Cal-J and Riogrande) were sourced locally. Methodology and Results: Cleft graft method was carried out when seedlings of eggplant, Hawaii 7996 and local tomato cultivars were 30, 17 and 14 days old, respectively. The grafted seedlings with graft union tied using grafting clips were healed in a dark chamber for three days and then in a transparent chamber for three days. The average temperature and relative humidity in both chambers were maintained at 21-30°C and 85-95 %, respectively. The grafted seedlings were hardened for seven days in an open nursery with 30% overhead shade prior to transplanting. Data on graft success were subjected to analysis of variance using MSTATC statistical software and treatments mean separation was conducted based on Student-Newman Keuls at P < 5 %. Results show that graft success between eggplant rootstocks and local tomato cultivars was higher ranging from 86 to 100%. On the contrary, grafting rootstock Hawaii 7996 with local tomato cultivars significantly (P≤ 5%) resulted in a lower graft success ranging from 30 to 50% during the hardening stage in the open nursery. Conclusion and application of results: Tanzanian local tomato varieties can be grafted onto eggplant rootstocks EG190, EG195, EG203 and EG219 with high graft success. As these eggplant rootstocks are resistant to soil borne diseases, farmers should graft their varieties in order to increase tomato yield. Further studies are therefore required to optimize the grafting conditions to improve graft success between rootstock Hawaii 7996 and local tomato cultivars.

Effect of Grafting on Growth and Shelf Life of Tomatoes (&lt;i&gt;Solanum lycopersicum&lt;/i&gt; L.) Grafted on Two Local &lt;i&gt;Solanum&lt;/i&gt; Species

“…The high graft success observed in this experiment is supported by the results from other studies by Msogoya and Mamiro [15]. Despite of the high graft [64].…”

“…Yield is considerably reduced by the decrease in the mean number of fruits and mean total number of fruits harvested. This was reported by Msogoya [15] for EG219/Tanya and EG203/Tanya graft combinations during both rainy and dry seasons. The low total number of fruits in To/Ko and To/Nk was sure to follow due to their impaired growth performance emanating from constricted graft unions and possibly low rootstock vigour.…”

“…According to Msogoya and Mamiro [15], pesticide application is the major pest managment strategy of tomato pests usually applied on a weekly basis [16]. These increase both the cost of production, risks for human health and environmental pollution [16] [17] [18] [19].…”

Grafting Influence on Physio-chemical Characters of Tomato on Brinjal Root Stock

“…The optimum temperature should retain at 21-36 °C for better transplanting (Kumar, 2017). Ofori (2015) and Msogoya and Mamiro (2016) reported similar types of result in their study while grafting tomato on brinjal rootstock.…”

NGHIÊN CỨU SỰ TƯƠNG THÍCH GIỮA NGỌN GHÉP CÀ CHUA BI (Lycopersicon esculentum var. cerasiforme) VÀ MỘT SỐ GỐC GHÉP CÀ TÍM

“…Từ năm 1998, Trung tâm nghiên cứu Rau châu Á (AVRDC) đã chuyển giao thành công vào Việt Nam công nghệ ghép cà chua trên gốc cà tím với mục đích nâng cao hơn nữa hiệu quả của việc sản xuất cà chua trái vụ trong điều kiện bất thuận như các loại bệnh hại và yếu tố ngoại cảnh nóng ẩm mưa nhiều của các tỉnh miền Bắc. Qua quá trình chọn lọc các gốc ghép cho cây cà chua, gốc cà tím của các giống EG195 và EG203 được nhận định là gốc ghép khỏe nhất và có tính kháng bệnh về hệ rễ tốt nhất khi ghép với cà chua [4]. Tỷ lệ sống của cây ghép là 86 -100%, cây cho trái như cây cà chua thông thường và thời gian thu hoạch được kéo dài do tuổi thọ của gốc cà tím dài hơn.…”