PRELIMINARY YIELD TRIAL OF PADI AYU 2 UNJA MUTANT STRAIN ON RAIN-FED LOWLAND AGRO-ECOSYSTEM IN ITS VEGETATIVE STAGE

Abstract

The objective of the Preliminary Yield Trial (PYT) of Padi Ayu 2 UNJA mutant strain on rain-fed lowland agroecosystem in the vegetative stage was to obtain Padi Ayu 2 UNJA mutant strain with the following characteristics: high survival rate, short stems, and multiple sprouts. The mutant strain was a breakthrough for the in situ rice production technology. It was considered as a new local-wisdom-based superior variety suitable for a rain-fed lowland agroecosystem. The new superior variety has high yield potential and can be used as a sustainable in situ rice cultivation technology. During the study, the agroecosystem in which the mutant strain grew was not irrigated. Rain becomes the only water supply. The selection was carried out on a pedigree basis to describe the components of vegetative growth. The objective was to identify specific characteristics of Padi Ayu 2 UNJA that has a high yield and high tolerance toward rain-fed lowland agroecosystem.The results reported four Padi Ayu 2 UNJA mutant strains having high tolerance toward the agroecosystem. Their characteristics were short stems (93.11-97.44 centimeters) and high-yielding ability cultivars (30.38-36.50 cultivars). KD2, KD3, KD4, and KD5 Padi Ayu 2 UNJA are potential mutant strains with high yield in rain-fed lowlands agroecosystem.

Keywords

• preliminary yield trial
• padi ayu 2 unja mutant strain
• rain-fed lowland agroecosystem
• vegetative growth stadia