Performance, diversity analysis and character association of black pepper (Piper nigrum L.) accessions in the high altitude of Idukki district, Kerala

Abstract

The experiment was conducted to evaluate black pepper accessions for growth parameters, yield attributing characters and yield. Out of the ten accessions tested, Karimunda recorded the highest fresh (1.61 kg) and dry (508.7 g) yield of berries plant-1. Fresh weight showed significant positive genotypic correlation to dry weight and while negative correlated to 100 berry volume, 100 berry weight and number of berries spike-1. Hence, selection based on number of berries spike-1, 100 berry volume and 100 berry weight may not lead to the high yielding black pepper variety. The results showed that Karimunda is the most suitable black pepper variety for high altitude areas of Idukki district.

Assessment of genetic diversity based on morphological, biochemical and physiological traits of black pepper (Piper nigrum L.) cultivars from Kerala

“…Preethi et al (2018) observed a positive correlation between leaf length and leaf width in their study Shango et al (2021). reported a signi cant correlation between spike length and yield.…”

“…Chen et al (2018) also found a strong in uence of leaf width, spike length and berry diameter on the grouping of black pepper cultivars. High variation in yield has been reported in black pepper(Pradeepkumar et al 2003;Preethi et al 2018;Reshma et al…”

Diversity of black pepper plant (Piper nigrum) in Bangka Island (Indonesia) based on agro-morphological characters

“…The agro-morphological character of black pepper in Bangka Island has phenotypic variability or phenotypic diversity in the form of wide, quite wide, quite narrow, and narrow. The phenotypic variances were very far from each other shows the high influence of environment on black pepper traits (Preethy et al 2018). The value of variability is the important component to measure before determining the method and time to perform further selection (Mustikarini et al 2019).…”

“…Relationship analysis is used to classify objects based on the similarity of certain characteristics. For evolving high yielding varieties of any crop, knowledge on the relationship between characters is essential (Preethy et al 2018). The dendrogram drawing of a 0.50 or 50% threshold line is divided into five clusters.…”

“…Based on variability results, the black pepper breeding program on Bangka Island can be done using length of petiole, length of stem segment, and fruit size. According to Preethy et al (2018) selection program based on agronomic characters, such as dry weight of berries, would be better than selection based on size of berries and number of berries/spike in black pepper. Therefore, the selection criteria for black pepper breeding programs would be better if the percentage of perfect fruit, weight of 1000 fruits, and the weight of 1000 dried seeds were also used for selection.…”